Abstract
Owing to its advantages such as producing durable models and easy accessibility, 3D modeling and printing (3DMP) has become increasingly popular in educational practice and research. However, the results of many studies have shown that the adoption rate of 3DMP among teachers is still low, especially in elementary schools. Therefore, research is needed to expand current knowledge about what influences teachers' decisions to start and continue using 3DMP in elementary schools. To investigate factors that affect elementary school teachers' decisions to use 3D printing in teaching, this study uses a mixed methods research approach combining binary logistic regression with a qualitative thematic analysis approach. Both approaches assembled predictive constructs from a range of theories on (1) technology acceptance and (2) intentions to continue or abandon 3DMP use. Using a sample of 225 elementary teachers from Montenegro, this study empirically concluded that intentions to discontinue 3DMP was slightly more strongly correlated with the predictors (i.e., performance expectancy, effort expectancy, perceived pedagogical impact, personal innovativeness, management support, user interface quality, technology compatibility, social influence, student expectations) than was intentions to continue using 3DMP. Performance expectancy was a significant determinant of teachers’ continued use of a 3DMP approach. The remaining seven factors (constructs) were found to be insignificant predictors. Perceived pedagogical impact and technology compatibility were significantly associated with teachers' decisions to discontinue using 3DMP. Our results also suggest that the time required to use 3DMP during instruction, the impact of 3DMP on the implementation of curriculum activities, and the availability of 3D printers are all relevant factors that influence teachers’' decision to use or abandon 3DMP.
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Introduction
The constant changes and developments in technology are leading to a transformation from Society 4.0 and Industry 4.0, to Society 5.0 and Industry 5.0 (Roblek et al., 2021), resulting in a change in the requirements of the labour market and the job-related skills and competences of workers and job seekers. In recognition of the expected changes, the European Commission published the Key Competences Framework for Lifelong Learning in 2006 and updated it in 2018 (European Commission, 2018) to promote the development of key competences for all citizens, which they need “for personal fulfillment and development, employment, social inclusion and active citizenship” (p. 3). While all competences have been recognized as equally important and should be considered part of the essential foundation for building learning competences, not all target future careers equally. We would like to highlight entrepreneurial and digital competences (Schola Europaea, 2018), which, like all others, should be acquired in elementary school (Ilomäki et al., 2016).
There have been studies claiming that advanced technologies such as 3D modeling (generation of 3D models using software) and printing (construction of a 3D object with implementation of 3D printers on the basis of digital design) (3DMP) could be successfully used to promote and develop digital and entrepreneurial competences in education at all levels (Gallardo-Echenique et al., 2015). The contribution of 3DMP application to the educational process and student learning outcomes has been confirmed in many experimental studies (for a review, see Anđić et al., 2022a; Pearson & Dubé, 2021; Ford & Minshall, 2019). However, the adoption rate and implementation of 3DMP in education is still low (Anđić et al., 2022b; Holzmann et al., 2020). Kafyulilo et al. (2015) concluded that the adoption of educational technologies depends mainly on teachers. Anđić et al (2022b) indicate that teachers' perceptions of 3DMP are one of the key factors for its successful use in teaching and that further research in this area is necessary. Thus, we can conclude that it is crucial to investigate how teachers perceive the usability of 3DMP and what factors influence their decision to use it in the classroom. While there is some research in this area, it is mostly related to secondary and postsecondary teachers. A detailed analysis of available research in academic databases did not reveal any study that examined the same set of factors selected by the authors of this study as influencing elementary teachers’ decision to use 3DMP in the classroom.
The main goal of our research is to identify relevant factors predicting elementary teachers’ adoption of 3DMP during instruction. The research seeks to address the following question: What are the drivers of and perceived issues in teachers’ adoption of 3D printers in teaching? This paper begins with a literature review on using 3DMP during teachers’ lessons and the theoretical framework underlying our empirical study. In addition, the hypothesis, the tested model, and the analytic procedure are discussed. The fourth section presents the results of the study, which are then analysed in the next section in the context of the overall research. The final section summarizes the findings and provides implications for 3DMP designers and teachers in the field, while considering limitations in this paper and issues for future research.
3DMP in elementary school
3DMP provides the opportunity to visualize abstract ideas, create tangible artifacts, and thereby foster student creativity. However, most of these studies focus on secondary and higher education and only a few on the use of 3DMP in elementary instruction. A search of various academic databases (e.g., Scopus, Web of Science, ERIC,) revealed that the papers studying the contribution of 3DMP to the teaching and learning process are unevenly distributed across subjects. The number of papers is highest in mathematics, and lowest in science and technology, while research on this topic is scarce in language, arts, and humanities. In this literature review, we have tried to point out some of these works. Chen et al. (2014) found that the use of 3DMP in fifth-grade mathematics instruction contributes more to students’ spatial reasoning skills than the traditional learning approach. Stansell and Tyler-Wood (2016) conclude, based on their research, that 3DMP is beneficial for learning mathematics in elementary schools, but also for practising mathematical learning principles, skills, and knowledge when working on STEM (Science, Technology, Engineering and Mathematics) projects. The positive contribution of 3DMP to students’ mathematical learning outcomes in elementary school is the area best researched and recognized (Huleihil, 2017; Witt, 2015). In the field of science education, some studies in the area of biological education in elementary school have confirmed the positive contribution of 3DMP to student learning outcomes in topics such as “selection” (Kwon et al., 2020) and “environment and social sustainability” (Vones et al., 2018). Hansen et al. (2020) literature review on implementation of 3DMP in biology classrooms shows that this instructional technology can be successfully used in inclusive biology classrooms in elementary schools. Based on their research findings, Fidalgo et al. (2019) concluded that 3DMP can be used to improve chemistry instruction in elementary schools. A previous study by Maloy et al. (2017) showed that elementary teachers and students find the implementation of 3DMP in history/social studies classes difficult and challenging, but see the benefits for active learning, technology integration, and closer student–teacher relationships. In recent years, there has been some research looking at the usability of 3DMP in the language classroom; however, these studies are sparse. Surveys, such as Zarei et al. (2021), have shown that teachers and students find 3DMP engaging and that it meets the needs of active, innovative, and engaging language teaching and learning environments, but more research is needed in this area before a definitive recommendation for practice can be made. Menano et al. (2019) reached similar conclusions regarding the use of 3DMP in elementary school language arts classrooms. They suggest that 3DMP can promote and enhance multidisciplinarity, higher levels of creativity, and curriculum enrichment in the elementary school art classroom; however, teachers need digital and technical support to use this tool in the classroom. In addition to research examining the use of 3DMP in individual subjects in elementary school, some research suggests that this teaching tool is ideal for achieving transdisciplinarity in the classroom and implementing the STEAM approach in elementary schools (Bower et al., 2018; Stevenson et al., 2019; Togou et al., 2018). It can be concluded that 3DMP brings to education active inclusion of students in the teaching process, multidisciplinary learning and creativity, and enrichment of the curriculum. On the other hand, the use of 3DMP by teachers is influenced by the technical and technological features of 3DMP.
To date, several studies have been conducted examining elementary school teachers’ opinions and perceptions of 3DMP. Bower et al. (2020) identified the following as the main factors for the decline in continuous use of 3DMP in elementary schools: technical problems with 3D printing (accuracy in printing), connectivity of the 3D printer with other devices and networks (Internet, computers, laptops, and tablets), usability problems with the software (difficulty in modeling), and insufficient time for teachers and students to use it in the classroom. According to teachers, improving the technical features of 3D printers, adapting the software for pedagogical purposes, and lowering the price are necessary to make this technology as successful as possible in practice (Kostakis et al., 2015; Maloy et al., 2017). Although there is some research that has contributed to knowledge in the area of teacher opinions about 3DMP (e.g., Novak & Wisdom, 2018; Song, 2018; Yildirim, 2018), previous studies have not identified what factors influence teachers’ decisions to accept and continue to use 3DMP in the elementary classroom. The specific purpose of this study is to investigate elementary teachers’ behavioural intentions regarding the use of 3DMP in their classrooms. To achieve this objective, we selected the research approach described below.
Theoretical framework
Several theoretical models have been used to examine the acceptance and use of technology in education. However, Šumak and Šorgo (2016) point out that none of these models has been developed specifically for educational technologies and their application in education and that one of the most promising models is the Unified Theory of the Acceptance and Use of Technology (UTAUT) model. Venkatesh et al. (2003) developed the UTAUT model based on the major constructs of the Technology Adoption Model (TAM) (Davis, 1989), the Theory of Reasoned Action (TRA) (Sheppard et al., 1988), the Theory of Planned Behavior (TPB) (Ajzen, 1991), the Model of PC utilization (MPCU) (Thompson et al., 1991), the Innovation Diffusion Theory (IDT) (Moore & Benbasat, 1991), and the Motivational Model (MM) (Davis et al., 1992). Each of these theories contributed to the formulation of UTAUT: TRA brings variables that examine attitude toward using the technologies; TAM explains causal relationships between perceived usefulness and perceived ease of use and users' attitudes toward behavioral intentions and actual use of the technological system; TPB explains perceived usefulness; MPCU explains factors related to social factors and facilitating conditions.; and MM bring constructs related to intrinsic and extrinsic motivation.
According to the authors (Venkatesh et al., 2003), the following four constructs are direct predictors of user acceptance and use of information technology: performance expectancy (PE), effort expectancy (EE), social influence (SI), and facilitating conditions (FC). Numerous studies have extended UTAUT to include constructs rooted in other theories or developed for specific reasons. When examining individuals who have already tested a particular technology, Technology Continuance Theory (Liao et al., 2009) and the Expectation-Confirmation Model (ECM) (Bhattacherjee, 2001) are appropriate for assessing willingness to continue using a technology or process. TCT applies to users at any stage of the adoption life cycle, including initial, short-term, and long-term users, and incorporates two key constructs—attitude and satisfaction—into one continuity model. ECM imply that user inclination to continue using any technology is influenced by how satisfied they are with it and how beneficial they view it to be.
UTAUT (and extended versions) have been widely used to examine behavioural intentions, continuance intentions, and acceptance of various technologies, including the 3DMP. Based on a comprehensive systematic literature review of the acceptance of 3D printing technology in different areas of human activity, Ukobitz (2020) concluded that UTAUT is one of the most widely used and appropriate models for this type of research. UTAUT has already been used in research to investigate the acceptance of 3DMP in manufacturing (Schniederjans, 2017), potential customer attitudes toward using 3DMP to make their own clothing (Popov & Koo, 2020), occupational therapists’ acceptance of 3DMP (Slegers et al., 2020), and user acceptance of desktop 3DMP for home manufacturing (Kamel, 2021), to name a few. However, educational research on the acceptance and adoption of 3DMP in educational settings is still sparse. Benham and San, (2020) studied the acceptance of 3DMP by occupational therapy education students. They used the Technology Acceptance Model (TAM) in their study. The study concluded that perceived usefulness, perceived ease of use, attitude toward use, and intention to use were the most important factors influencing the acceptance of 3DMP by students participating in the study. Holzman et al. (2018) conducted a significant analysis and discussion of the determinants influencing high school teachers’ adoption of 3DMP. In their study, they used the UTAUT model enriched by the integration of anxiety. Their results suggest that performance expectancy, facilitating conditions, anxiety, and attitudes toward technology use significantly influence the adoption of 3DMP in the classroom. However, the results of this study suggest that expectancy, effort expectancy, and social influence do not affect behavioural intention to use 3DMP in the classroom.
To our knowledge, no study has examined the factors that influence elementary teachers’ decisions to use 3DMP in the classroom. Hence, the factors that lead elementary teachers to use or not use 3DMP in the classroom remain speculative. This study aims to address this research gap. Therefore, we ask the following question: What factors influence the adoption of 3DMP in the classroom, and to what degree?
Tested model and hypotheses
The model in this study was developed based on previous research on technology acceptance. Shin et al. (2011) and Pinpathomrat (2015) suggested that combining two or more constructs from different theoretical models could help researchers better understand what users expect from technology and whether they intend to continue using it. Consistent with this suggestion, in addition to UTAUT (Venkatesh et al., 2003), the Technology Continuance Theory (Liao et al., 2009), and the Expectation-Confirmation Model (ECM) (Bhattacherjee, 2001; Wu & Zhang, 2014) were explored. The tested model in this study is shown in Fig. 1. For each predictor in the model, we argue a separate hypothesis (H1—H8), in the sense that each factor represents a significant predictor of continuance intention (CI) to use 3DMP in the classroom. CI represents behavior that is continued over time and is distinct from the decision to begin using the technology (Yan et al., 2021). The CI (Bhattacherjee, 2001) was used instead of behavioural intentions (Venkatesh et al., 2003) because Montenegrin teachers from selected schools had been given 3DMP and many of them thus had previous first-hand experience with the printers (Table 1.
The outcome construct: Continuance Intention (CI)
The Continuance Intention (CI) variable to be used in the model relates to Information Systems Continuance Intention Theory (Bhattacherjee, 2001) and follows the logic that continuity or discontinuity in the use of a particular technology is related to satisfaction with that technology and a number of personal intrinsic and extrinsic factors as listed in Expectation Confirmation Theory (Oliver, 1980) and other theories based on the extended UTAUT (Dolenc et. al., 2022). Continuance intention pertains to a user's intention to sustain or continue using the technology over time, while behavioral intention refers to a user's planned or anticipated actions related to the initial adoption of the technology. We did not find any references directly linking 3D printing to the continuance intentions of teachers, but there are a number of references to the use of other digital technologies or services (e.g., Al-Emran et al., 2020; Chow and Shi, 2014).
The construct “intention to extend 3DMP use” (CI) is composed of four progressive statements (Table 2) on the basis of several previous studies (Anđić et al., 2022c; Kim et al., 2016; Šumak & Šorgo, 2016) and is considered an outcome construct in our study. The ordinal response scale was as follows: Stop using (1), Reduce using (2), Continue using (3), and Increase using (4).
The constructs predicting Continuance Intention (CI)
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1.
Performance expectancy (PE)
Performance expectancy (PE) is the extent to which an individual believes that the use of technology will improve performance (Venkatesh et al., 2003). In our study, PE is defined as teachers’ belief that the use of 3DMP will improve their teaching performance by facilitating instruction, increasing teaching productivity, and improving teaching effectiveness. According to Holzmann et al. (2020), PE is a significant predictor of teachers’ behavioural intention to use 3DMP in the classroom. Therefore, the following hypothesis is proposed:
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H1: PE statistically significantly predicts teachers’ continuance intention (CI) to use 3DMP in the classroom.
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2.
Effort expectancy (EE)
Effort expectancy (EE) is defined as a person’s assessment of the extent to which a technology is easy to use (Venkatesh et al., 2003). In the study by Holzmann et al. (2020), no empirical evidence was found to support the influence of EE on secondary school teachers’ willingness to use 3DMP in the classroom. However, previous research that examined the CI of Montenegrin teachers about digital learning tools (Anđić et al., 2022c), affirmed that EE statistically significantly predicts teachers’ CI. In this study, EE was considered as the teachers’ opinions about the ease of using 3DMP in the classroom, the clear and meaningful interaction with the 3D modelling software and with the 3D printers themselves, and the time needed to acquire the skills necessary to comfortably use 3DMP in the classroom. Accordingly, the following hypothesis is proposed:
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H2: EE statistically significantly predicts teachers’ continuance intention (CI) to use 3DMP in the classroom.
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3.
Perceived Pedagogical Impact (PPI)
Perceived pedagogical impact (PPI) is described as a teacher’s perception of how technology can support them in translating their pedagogical-didactic principles into classroom practice and contribute to students’ knowledge and skills (Chroustova et al., 2017; Ertmer, 2005). To our knowledge, no studies have been found that have examined the impact of PPI on teachers’ use of 3DMP in the classroom. However, Chroustova et al. (2017) hypothesize that PPI influences teacher decisions to use educational software. PPI is defined in this study as teachers’ beliefs about how using 3DMP in the classroom can affect students’ academic achievement, motivation to learn, active engagement in the instructional process, and the amount of time students spend using computers for instructional purposes. Based on the above, we hypothesize the following:
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H3: PPI statistically significantly predicts teachers’ continuance intention (CI) to use 3DMP in the classroom.
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4.
Personal Innovativeness (PI)
Venkatesh and Davis (2000) and Lu et al. (2005) defined personal innovativeness (PI) as a personality trait that represents a person’s enthusiasm for or willingness to accept and try new technologies. Research by previous scholars shows that PI influences teacher decisions to accept and continue using digital instructional technologies (Dutta et al., 2015; Farooq et al., 2017). PI is defined in this study as teachers’ beliefs about how much they enjoy experimenting with new technologies, with a focus on educational technologies.
We hypothesize the following:
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H4: PI statistically significantly predicts teachers’ continuance intention (CI) to use 3DMP in the classroom.
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5.
Management Support (MS)
Management support (MS) is defined by Sabherwal et al. (2006), Dwivedi et al. (2017), and Šumak et al., (2017) as the support that management provides to employees in accepting and using technology. Research by the same authors has documented the influence of MS on teacher decisions to accept new technologies. In this study, MS encompasses teachers’ perceptions of how much support they receive from school management and supervisors for implementing 3DMP in the classroom. The following hypothesis is proposed:
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H5: MS statistically significantly predicts teachers’ continuance intention (CI) to use 3DMP in the classroom.
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6.
User Interface Quality (UIQ)
The extent to which teachers think that the interface allows them to easily navigate and move across the interface is referred to as User Interface Quality (UIQ) (Šumak et al., 2017). In our research, UIQ considers teacher perception of the quality of the software used for 3D modeling in the classroom, the way it is organized, the type of audio-visual experience it provides to students, and how it can be used to present instructional content. The following hypothesis was formulated:
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H6: UIQ statistically significantly predicts teachers’ continuance intention (CI) to use 3DMP in the classroom.
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7.
Technology Compatibility (TC)
Technology Compatibility (TC) is defined as the compatibility of technology with existing software and hardware systems (Yang et al., 2016). Considering that the use of 3DMP in the classroom requires the use of computers on which 3D models are modelled, TC in this study means the compatibility of 3DMP with the computers and software that teachers already use for other purposes.
Therefore, we hypothesised the following:
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H7: TC statistically significantly predicts teachers’ continuance intention (CI) to use 3DMP in the classroom.
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8.
Social influence (SI)
The extent to which individuals view the beliefs and opinions of others as essential to deciding whether they should use a particular type of technology is referred to as social influence (Venkatesh et al., 2003). According to Holzmann et al. (2020), social influence has no impact on secondary school teachers’ use of 3D printing technology CI. However, previous research that explored the CI of Montenegrin teachers about digital learning tools (Anđić et al., 2022c) concluded that SI statistically significantly predicts teacher CI. In this study, social influence is considered as teachers’ beliefs about whether their colleagues, students, and students’ parents expect them to use 3DMP in the classroom. With this in mind, the following hypothesis is proposed:
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H8: SI statistically significantly predicts teachers’ continuance intention (CI) to use 3DMP in the classroom.
Study design
Sampling and Research Sample
In this study, we conducted purposive sampling. The purposive sampling technique is the deliberate choice of a participant based on the characteristics of the participants (Cohen et al., 2002). The main criteria for the inclusion of teachers in this research were that they had received training in the use of 3D printers in teaching and that they worked in those schools equipped with a 3D printer.
Data collection lasted 20 days, in February 2020. A total of 255 teachers completed the survey. We excluded respondents from the sample on a case-by-case basis. In this way, we tried to avoid information leakage. Depending on the circumstances, we excluded data on a case-by-case or list-by-list basis, to prevent leakage of information. This reduced the number of cases in the sample to about 220 respondents. In our sample, female teachers represented 58.8% and male teachers 41.2%. The youngest teacher who participated in the study was 25 years old and the oldest 65 years old. Most participants, 25.9%, were between 36 and 40 years old; 21.8% of participants were 41 to 45 years old; 20.4% were 46 to 50 years old, while other age groups were less represented. Most study participants (32.7%) had 11–15 years of professional experience, followed by a group of teachers with 16–20 years of professional experience (31.4%), then teachers with 6–10 years of professional experience (21.7%), and teachers with less than five years of professional experience (7.5%); the remaining groups were less represented. All participants who took part in this study had attended teacher workshops on the use of 3DMP in the classroom, and all schools were equipped with 3D printers.
Variables in the models
The continuance intention is a unique dependent variable in this study. It is defined as a teacher’s desire to use 3DMP in his or her future teaching. The following variables were the independent variables in this study: performance expectancy, effort expectancy, perceived pedagogical impact, personal innovativeness, management support, user interface quality, technology compatibility, and student expectations (see Fig. 1).
Questionnaire development and validation
In designing the questionnaire, we aimed to collect qualitative and quantitative data using the convergent parallel design. This approach served to gain a comprehensive understanding of the factors influencing teacher decisions to use 3DMP in the classroom and to provide a holistic approach. The questionnaire was divided into the following sections:
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1)
demographic factors (gender, age, and years of work experience);
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2)
constructs measuring opinions about 3DMP. Four items per construct were used to measure EE, TC, PI, SI, MS, and UIQ, and five items per construct were used to measure PE and PPI. A 7-point Likert scale was used, ranging from “strongly disagree” (1) to “strongly agree” (7).
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3)
Continuance intention (CI) to use 3DMP consists of four progressive statements (Table 2) and is considered an outcome construct in our study. The ordinal scale comprised the following values: stop use (1), reduce use (2), continue use (3), and increase use (4).
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4)
Open-ended questions were used to collect qualitative data. These questions were designed to allow participants to express any feelings and thoughts about 3DMP that were not included in the closed-ended questions. A total of six of these questions were divided into three organizational concepts: 1) opinions about the technical features of 3D printers; 2) opinions about 3D modeling software; and 3) advantages and disadvantages of 3DMP in the classroom. The open-source application 1KA (https://www.1ka.si/) was used to create and store the questionnaire.
Exploratory factorial analysis was used to determine the unidimensionality of the constructs (Table 2) and potential presence of more than one latent variable. Kaiser–Meyer–Olkin tests (KMO) and Bartlett’s tests for sphericity were performed to determine if the data were suitable for factorial analysis (Table 2). A value of 0.8 was set as the threshold. Internal consistency was determined using Cronbach’s alpha. Table 2 shows that all alpha values were greater than 0.8, which is the threshold for highly reliable constructs (Cohen et al. 2007). The questionnaire was initially written in Serbian-Montenegrin before being translated into English. The items in the questionnaire were simultaneously checked by people proficient in both languages.
Data Analysis
The IBM SPSS 24 statistical package was used to analyse the data collected with the questionnaire. Nonparametric tests were used because some variables lacked a normal distribution (with a Kolmogorov-Smirnoff test result of p < 0.05). The Mann–Whitney U test was chosen to determine if there was a significant difference in the participants’ opinions. Binary logistic regression was used to determine the variables that influenced teacher decisions to continue or stop using 3DMP in the classroom. When summing responses to each construct, Spearman’s rank correlation test was used for dichotomous and ordinal data with the following ranges: 0.31—0.50–weakly correlated; 0.51—0.7–strongly correlated; 0.71—0.90– highly correlated. Assumptions of multicollinearity, which can impact the interpretation of results of regression analysis, were checked by inspection of correlation coefficients between predictor variables and VIF (Variable Inflation Factors). It was established that the values of VIF did not exceed the value of 5, which is used as a rule of thumb to proceed with the analysis. Correlations between the variables calculated as Spearman’s rho did not exceed the value of 0.8 assuming high multicollinearity; therefore, no measures were taken (e.g., exclusion of variables) to correct it.
To measure the reliability of the constructs, the Cronbach’s alpha test was chosen with the following ranges: > 0.90–very reliable; 0.80—0.90–reliable; 0.70—0.79– somewhat reliable; and 0.60—0.69– moderately reliable (Cohen et al. 2007). The unidimensionality of the constructs was checked using principal axis factor analysis, and a prior assessment of the data matrix was checked using the KMO and Bartlett’s test. Because all constructs were unidimensional, item sums (referred to as sum [abbreviation of construct]) were used in the correlation analyses.
A thematic analysis approach was used to process the qualitative data. This followed the suggestions of researchers Braun and Clarken, (2006; 2012) and included the following steps: transcribing the data, familiarization with the data, generation of initial codes, searching for themes, reviewing potential themes, defining and naming themes, and writing the report. An inductive coding approach was used in the study. This means that the codes and themes are generated directly from the data itself during the coding process. Inductive thematic analysis is recommended for data processing when data are lacking in a research area and new essential knowledge could be gained by “giving voice to the experiences and meanings of this world as reported in the data” (Fereday & Muir-Cochrane, 2006; Terry et al., 2017).
Results
Part 1: Descriptive statistics -measures of central tendencies and factor loadings
In the first part, measures of central tendencies are given for all constructs considered (except Continuance Intention). All constructs are one-dimensional, so the factor loadings from the Principal Axis Factor Analysis (PAF) are given, as well as the percentage of variance explained, the eigenvalue, and Cronbach’s alpha.
Continuance Intention (CI)
Continuance Intention (CI) is composed of four statements and is considered an outcome construct in our study.
Two hundred and twenty teachers provided answers. Table 2 shows that most teachers will definitely use the 3DMP regularly or are even planning to increase use in the next school year (N = 185; 84.1%). The less optimal news is that ten teachers are planning to reduce the use and 25 (N = 35; 15.9%) even to stop using this technology.
Performance expectancy (PE)
Table 3 shows (factor loadings > 0.9; mode = 7) that teachers view 3DMP as useful and as something that can increase teaching productivity and effectiveness but that does not make this process easier (mode = 5).
Effort Expectancy (EE)
Measures of central tendencies in all three items listed in Table 4 are around the middle of the scale, indicating that acquisition of the skills needed for classroom use may not be smooth for all teachers, although they do not find it very easy to use (Tables 5, 6, 7, 8, 9 and 10).
Perceived Pedagogical Impact (PPI)
Teachers rate the positive influence of the 3DMP rather high, with the lowest scores given to the impact on motivation to use educational technologies. An encouraging finding is that 3DMP engages students in the learning process.
Personal Innovativeness (PI)
Teachers self-evaluate their innovativeness as rather high. It is interesting to note the difference between teachers’ perceived willingness to try new teaching materials, which scores high, and their perceived willingness to try new technology, which is lower.
Management Support (MS)
Support from management is above the median value of the scale, but not very enthusiastic in the opinions of the teachers.
User Interface Quality (UIQ)
There is a large discrepancy between the opinion that the teaching content is well organized (UIQ4) and other items that are more related to the interface, which may be an incentive to exclude this item from further research using this construct. With the exclusion of item UIQ4, the explained variance increased to 77.1% (eigenvalue = 2.5; Cronbach’s alpha = 0.91). Nonetheless, there is much room for improvement in the interface, which is beyond the teachers’ control.
Technology Compatibility (TC)
All items show measures of central tendencies above the median of the scale, showing that new technology can align with existing teaching habits.
Social influence (Si)
The level of social influence is above the median value of the scale; however, opinions about Student Expectations are lower than the perceived expectations of colleagues and people who influence teacher behaviour.
Part 2: Hypotheses testing -Correlations and regression coefficients between predicting constructs and CIs
The correlations of CI with other constructs are presented in Table 11.
It was easy to recognize two patterns. First, correlations between all constructs and CI to stop using 3DMP are slightly stronger than between them and CI to continue use at the same level. All correlations with constructs and CI to increase use are statistically non-significant. The correlations between the constructs and CI to reduce use are significantly negative but of moderate magnitudes. The second pattern is that all correlations from the first case are negative and from the second case positive. The most negative correlation is between TC and CI, and the highest positive correlation is between EE and CI.
The binary logistic regression analysis results revealed that, except for the sumPE construct, the remaining seven factors (constructs) were found to be unimportant determinants for teachers to continue the use of 3DMP, Table 12.
Except for the sumPPI and sumTC construct, the remaining six constructs were determined to be insignificant predictors of teacher decisions to stop using the 3DMP, according to the results of the binary logistic regression analysis (Table 13).
Part 3: Qualitative analysis
Qualitative data combined with quantitative give a more complete picture of the factors influencing teacher decisions to use 3DMP in teaching. This also gave the researchers much more information and complete insight into teachers’ perception of 3DMP as a teaching tool. In this study, thematic analysis (Kuckartz, 2014) of teachers’ answers results in the identification of 216 codes, which are classified into three themes: Time, Curriculum and Limited access to 3D printers. These themes and teacher illustrative quotes are presented below.
Theme 1: Time
The theme “Time” contains the greatest number of codes derived from the answers of teachers (89), which are classified into three sub-themes: a) limited time in class; b) long modeling time; and c) long printing time. Under the sub-theme ‘limited time in class’, almost 50% of responses concerned 45 min (regular school class time), insufficient for effective using 3DMP. For example, a teacher (male, 38 years) says: In one school class, students can hardly 3D model a small part of the model, let alone the whole model. If students need to 3D model something simple from scratch, they need at least three school classes; We can print 1 or 2 models during one school lesson. This brings us to the problem of printing other student models. The sub-theme ‘long modeling time’ contains codes related to the long time required for 3D modelling, so the teachers expressed the opinion: Creating a 3D Model in the software that is now available is time-consuming, time that can only be obtained at the expense of extracurricular activities or homework. As can be seen in the narrative, teachers had an idea of how to catch up with the time needed for 3D modeling in class, but when it comes to the time requirements of 3D printing, they again face a time crunch (female, 47 years): If students work in groups, the class usually has 5 groups; each group needs 30 min for printing the small 3D model. So, it takes about 2.5 h to print only the models of students from one class. If a teacher has three or more press departments, he needs about 7 h a day, which is difficult to do. As can be seen from these quotations, teachers believe that the application of 3DMP in teaching is very time-dependent, which complicates the application of this technology in school lessons.
Theme 2: Curriculum
This theme is represented in the teacher’s narrative with seventy-four codes, which are classified into two sub-themes: a) 3DMP as a tool for curriculum enrichment, and b) 3DMP and curriculum limitation. About 25% of teachers believe that the application of 3DMP contributes to the enrichment of the curriculum of subjects, and the usability of knowledge from one school subject to another and leads to interdisciplinarity in the teaching process. One of the teacher statements (female, 55 years) says: If I use 3DMP in chemistry classes, students then apply knowledge from informatics, technology, and mathematics in those classes along with 3DMP, which makes the teaching process transdisciplinary, and in fact, leads to STEM teaching. However, around 30% of teachers consider that the application of 3DMP may jeopardise the implementation of the curriculum prescribed by the competent authorities, an outcome which could be considered bad by the competent authorities. This is another statement from a teacher (male, 29 years): If I decide to use 3DMP in a teaching area, it means that I set aside more hours than prescribed by the curriculum. I can only get these classes if I take them from other teaching areas. I think the education inspectorate would rate this as a bad approach, since curriculum monitoring is a priority. I think that 3DMP will be used most effectively in after-school programs.
Theme 3: Limited access to 3D printers
The topic "Limited access to 3D printers" includes fifty-three codes that teachers mentioned in their answers. Within this topic, the teachers expressed the opinion that each school was equipped with one 3D printer, which is not enough for efficient use. About 25% of teachers expressed the opinion that one 3D printer is not enough in one classroom, and that the optimal number for effective application would be 3 to 5 printers. For example, one of the teachers (female, 46 years) wrote that the following suggestion is to improve the use of 3DMP in teaching: In order to make the best use of the capacity of 3D printers in teaching, it is necessary that each group of students during the class has the opportunity to interact with a 3D printer and print models. So, in ideal conditions, the classroom should have about 4–5 3D printers. As can be seen from the teacher's point of view, for the successful application of 3DMP in teaching, an appropriate number of 3D printers is needed in the school.
Discussion and Implications
This study focused on identifying factors that influence elementary teachers’ intentions to continue using 3DMP in the classroom after testing it in real-world settings. The results of our study suggest that EE has a minor influence on teachers’ CI to use 3DMP. Our results differ from the findings of Holzmann et al. (2020), in which no empirical evidence was found for the influence of EE on secondary school teachers’ use of 3DMP in the classroom. EE is significantly associated with teachers’ CI to reduce regular use of 3DMP, according to binary logistic regression (BLR) results. This result is consistent with the findings of previous studies indicating that teacher CI for the technology used by EE (Venkatesh & Davis, 2000; Wang & Wang, 2009). Our results also show that PPI is statistically significantly related to teacher decisions to use 3DMP regularly in the classroom, but also to the decision by another group of teachers who intend to stop using 3DMP in the classroom. The construct PPI, which considers the influence of 3DMP on students’ active engagement in the teaching process, received the highest response rate. On the other hand, the influence of 3DMP on student attitudes toward educational technologies received the lowest response rate. This result is consistent with previous findings (Chroustova et al., 2017), which found that PPI influences teachers’ intention to use educational technologies and software. Our results suggest that PI is correlated at a low level with teachers’ CI to use 3DMP. According to BLR results, PI was not associated with teacher decisions to use 3DMP regularly (twice per month). Our results differ from the findings of other studies by Šorgo et al. (2021) and Mazman Akar (2019), in which PI did have an impact on teachers’ technology adoption and CI. However, our results align well with those of Cali & Cali (2020). They concluded that PI alone did not show a significant influence on the intention to use 3DMP by owners and individuals in the interest of 3DMP. In our study, MS also correlated to a small extent with teacher CI. These results differ slightly from other studies which concluded that management support had considerable impact on technology adoption and use (Gagne, Koestner, and Zuckerman 2000). These results differ from those of Šumak et al. (2017), who concluded that there was no difference in MS-related responses between teachers who intend to use whiteboards in the classroom and those who do not. TC also correlated to a small degree with teacher CI of 3DMP in the classroom. These results are consistent with previous studies (e.g., Šumak et al., 2016, 2017) that examined teacher decisions to use interactive whiteboards. Compatibility of the 3DMP with the instruction teachers give in their classrooms had the highest response rate in the construct of technology compatibility (TC). This is in line with findings by Holzmann et al. (2020), who concluded that facilitating conditions and technology compatibility are important factors influencing teacher decisions to use 3DMP. Our result shows a low correlation between SSE and teachers’ CI for 3DMP, but this correlation is at the threshold (at the low level). Our results differ slightly from the results of the study by Holzmann et al. (2020), which indicate that SSE does not influence high school teachers’ intention to use 3DMP.
The most striking result of our study was obtained by BLR and shows that only one factor (PE) out of eight has a statistically significant effect on teacher decisions to continue using 3DMP in the classroom. These results contradict the findings of other studies showing the influence of PE on the adoption of digital educational technologies as well as 3DMP among secondary school teachers (Adov et al., 2020; Holzmann et al., 2020; Jevsikova et al., 2021). One possible reason for this opinion among teachers who participated in this study could be the attitude expressed by teachers in the answers to the open-ended questions in this research. They believed that the application of 3DMP in the classroom takes a lot of time and that its application could jeopardise the activities mandated in the curriculum. Future research should resolve these doubts.
Another important finding was obtained through BLR, which showed that PPI and TC had no influence on teacher decisions to stop using 3DMP in the classroom. This contrasts with findings by Chroustova et al. (2017), and Šumak and Šorgo (2016), which confirmed the influence of PPI on teacher decisions to continue using educational technology. This also contrasts with previous observations by Šumak et al. (2017) who showed that TC could influence teacher decisions to adopt technology and use it continuously. Holzmann et al. (2020) examined the factors influencing secondary school teachers’ acceptance of 3DMP and concluded that teachers were more inclined to accept this technology in their classrooms if it were compatible with existing infrastructure. These findings from our study may be of particular importance to policymakers as they plan to implement 3DMP at the elementary level. It is possible that teacher training on the use of 3DMP in specific subjects taught by teachers, with particular attention to how 3DMP can be used in combination with instruction and teaching approaches, would help teachers better appreciate the pedagogical potential of this teaching tool. However, this assumption should be explored in future research.
According to teachers’ opinions expressed in the open-ended question, time constraints were among the main barriers to using 3DMP in the classroom. Our findings are consistent with the results of recent studies by Arslan and Erdogan (2021). They indicate that the use of 3DMP in the classroom can be time-consuming, which affects its use in the classroom. These results suggest that improving 3D modelling software and 3D printers themselves in terms of speed and accuracy could increase their applicability in the elementary classroom. The teachers who participated in this study for the purpose of 3D modeling used Tinkercad software. Future software for educational purposes should therefore be improved and increase efficiency by increasing the ease and speed of its use, especially by elementary school students. These results could help 3DMP developers in the future improvement of this technology for educational purposes. An unexpected finding was that teachers had two opinions about the connection between 3DMP and the curriculum. On the one hand, teachers viewed 3DMP as a learning tool to enrich the curriculum. This is in line with findings from previous research (Chien & Chu, 2018; Holzmann et al., 2020; Pearson, & Dubé, 2021; Weller et al., 2015), who argue that 3DMP requires a fundamentally different logic of thinking and incentives to develop new knowledge and skills, combining knowledge from different subjects, which can lead to enrichment of subject curricula and better implementation of acquired knowledge in everyday life. The results of our research and of the studies mentioned above suggest that 3DMP can contribute to the development of interdisciplinary and vocational skills in students, which, as mentioned in the literature review, is one of the main requirements for modern educational strategies.
From a different perspective, the teachers who participated in our research viewed 3DMP as a barrier to achieving the learning outcomes recommended in the curriculum. The importance of linking curriculum to recommendations for successful use of 3DMP in the classroom has also been highlighted in previous research (Leinonen et al., 2020; Nemorin & Selwyn, 2017). These findings may be of particular importance to policy makers when developing elementary school curricula, as they should keep in mind that 3DMP can be used as a curriculum enrichment tool, but its utility in the classroom is highly dependent on curriculum recommendations. The results of our study show that the limited number of 3D printers in schools and the limited access of teachers and students to this teaching tool also significantly affect its applicability in the classroom. The lack of 3D printers in schools as a limiting factor for the application of this technology in the classroom has been cited in previous research as a major limiting factor for the use of this educational technology in developed countries such as the United States (Brulé & Bailly, 2021). Considering that the availability of technology is one of the basic requirements for its use in education, the data obtained in our research that teachers believe four to five 3D printers to be a desirable number for successful implementation is very important for future schools equipped with this educational technology.
Conclusions
Numerous studies show that 3D modelling and 3D printing are among the emerging educational technologies that could offer educational benefits from elementary school to college. However, the adoption rate of this technology among elementary school teachers is still low, and the factors that influence this decision by teachers have not yet been investigated. This study makes a first attempt to examine the factors that influence elementary teachers’ decision to continue using 3DMP in the classroom after the printers have been donated to the schools and they have been able to test them in their classes. We tested the regression model based on constructs extracted from a range of theories and applied as predictors of adoption and use of a range of digital technologies in education. The results of this study suggest that all eight selected constructs (performance expectancy, effort expectancy, perceived pedagogical impact, personal innovativeness, management support, user interface quality, technology compatibility, social influence, and student expectations) correlate poorly with teacher decisions to continue using 3DMP in the classroom. Our study found that all eight constructs correlated more strongly with teacher decisions to stop using 3DMP in the classroom than with their decisions to use it regularly in the classroom. One of the most interesting findings of this study is that performance expectations were found to be a statistically significant factor in teacher decisions to continue using 3DMP. Perceived pedagogical impact and technology compatibility showed a significant correlation with teacher decisions to stop using 3DMP. The results of the thematic analysis suggest that teachers believe that the time required to integrate 3DMP into the classroom, and the potential risk that implementing 3DMP could lead to a misalignment in the implementation of curriculum activities, together with the accessibility of 3D printers, are among the factors that influence the decision to use this technology in the classroom. Our study raised a number of questions that need further research in the future.
We are aware of the potential limitations of our research. The main limitation lies in the fact that all participants in our study have only recently begun using 3DMP (after having received training) in the elementary classroom. In addition, there are no previous studies that have examined the factors influencing elementary teachers’ decision to use 3DMP in the classroom, making it difficult to discuss and compare results; therefore, other technologies were used as proxies for comparison.
Data availability
The data that support the findings of this study are available from the corresponding author, upon reasonable request.
Code availability
Not applicable.
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Acknowledgements
This work was supported by the Slovenian Research Agency under the core projects: “Information Systems”, grant no. P2-0057 (Šorgo, Andrej) and Project: Research on the added value of the implementation of new information and communication technologies in Montenegrin and Slovenian education- founded by action Bilateral scientific research cooperation between the Republic of Slovenia and Montenegro.
Funding
Open access funding provided by Johannes Kepler University Linz. This work was supported by the Slovenian Research Agency under the core projects: “Information Systems”, grant no. P2-0057 (Šorgo, Andrej) and Project: Research on the added value of the implementation of new information and communication technologies in Montenegrin and Slovenian education- founded by action Bilateral scientific research cooperation between the Republic of Slovenia and Montenegro.
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AB, designed and facilitated this research, analyzed the data, and wrote the first draft of the manuscript; AS, CH, RW, and WL facilitated data analysis, writing and revised the manuscript; All authors read and approved the final manuscript.
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Branko, A., Šorgo, A., Helm, C. et al. Exploring Factors Affecting Elementary School Teachers’ Adoption of 3D Printers In Teaching. TechTrends 67, 990–1006 (2023). https://doi.org/10.1007/s11528-023-00909-y
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DOI: https://doi.org/10.1007/s11528-023-00909-y