Development of spatial thinking abilities in engineering 3D modeling course aimed at lower secondary students

International Journal of Technology and Design Education - Spatial visualization ability is an important factor in a child’s cognitive development. Its development is affected by numerous...     

The abilities of understanding spatial relations,spatial orientation,and spatial visualization affect 3D product design performance: using carton box design as an example

Three-dimensional (3D) product design is an essential ability that students of subjects related to product design must acquire. The factors that affect designers’ performance in 3D design are numerous, one of which is spatial abilities. Studies have reported that spatial abilities can be used to effectively predict people’s performance in conducting complex operations. Nevertheless, few studies have explored the relationship between spatial abilities and designers’ performance in 3D product design. Spatial ability is a type of mental ability and comprises numerous factors. Carton box design is a typical type of standardized 3D product design, in which designers’ performance is affected by the spatial abilities they possess. The most crucial factor among these abilities is the space conversion ability, which is the ability to convert two-dimensional (2D) surface developments into 3D perspective views and convert 3D carton boxes into 2D plans. These operations require an in-depth perception of objects, an understanding of the relative spatial relations among objects, and spatial visualization. In this study, carton box design was used as an example to investigate, using structural equation modeling, the effects that the ability to understand spatial relations, spatial orientation, and spatial visualization have on designers’ performance in 3D product design. The results indicated that all three spatial abilities (i.e., understanding spatial relations, spatial orientation, and spatial visualization) directly influence designers’ performance in carton box design. Therefore, spatial abilities are vital factors affecting designers’ performance in 3D product design.     

The mediator effects of conceiving imagination on academic performance of design students

Three studies were combined to examine the effects of creativity and imagination on the academic performance of design students. Study 1 conducted an exploratory factor analysis to determine the most appropriate structure of the Creativity Capability Scale (CCS) in a sample of 313 college students. The scale was a new self-report measure, and it was developed to be both empirically valid and easy to administer. A two-factor solution identified originality and useful flexibility as dimensions of human creativity. Study 2 conducted a confirmatory factor analysis to confirm the established structure of the CCS in a sample of 284 college students in design schools. In addition, we also confirmed the structure of the Imaginative Capability Scale using the same sample. A three-factor solution supported an earlier study in which human imagination was categorized into three types, namely initiating, conceiving, and transforming imaginations. The analyses of composite reliability and construct validity gave both scales good support. Study 3 further tested the effects of creativity and imagination on academic performance in a sample of 271 design students. The hypothesis of Study 3—that conceiving imagination acted as a mediator between creativity/imagination and academic performance—was partially supported. The structural model also showed that useful flexibility, initiating imagination and transforming imagination demonstrated positive, indirect effects on academic performance. Critical reflections on the results are provided. Discussions for future studies are also proposed.     

Nanotechnology awareness, opinions and risk perceptions among middle school students

The present study investigates awareness, factual knowledge, opinions, and risk perceptions of students from Turkish middle schools with regard to nanotechnology in a very general sense. The study was carried out among 1,396 middle school 6th, 7th, and 8th grade students. The students’ perceptions of and opinions about nanotechnology were elicited through a questionnaire developed by the authors. Students have some awareness of nanotechnology and most students had positive emotions and opinions about it. Students’ risk perceptions of nanotechnology and the influence of the demographic and affective domain, achievement in science courses, and science motivation on these perceptions were also investigated. The results show that, for gender, no significant difference was observed. However, for some of the demographic and affective domain factors, and achievement in science courses, significant differences were found.     

High school student modeling in the engineering design process

A diverse group of 20 high school students from four states in the US were individually provided with an engineering design challenge. Students chosen were in capstone engineering courses and had taken multiple engineering courses. As students considered the problem and developed a solution, observational data were recorded and artifacts collected. Quantitative methods were used to identify how students allocated their time across different types of modeling. Qualitative methods were used to review data from three students who spent substantial time engaged in graphical and two kinds of mathematical modeling. These students were profiled and their patterns of modeling are represented visually and described in context. Much of the modeling done by these 20 students was graphical in nature. Few students informed their thinking with mathematical representations, yet predictive mathematical modeling is essential to engineering design. Implications for the classroom include encouraging students to transfer understanding of science and mathematics into technology and engineering contexts through modeling.     

Design and technology productions among middle school students: an Indian experience

The focus of this paper is students’ design productions as they engaged in designing and making a windmill model to lift a given weight. This work is part of a project on the development of design and technology (D&;T) education units and its trials among Indian middle school students (Grade 6, age 11–14 years) in different socio-cultural settings. Since D&;T is not a part of the Indian school curriculum, the students had no earlier experience of design. Our trials included an exploratory phase followed by groups of students producing technical drawings and a plan for the making action (procedural map) before engaging in making the windmill model. The paper presents findings from a qualitative analysis of urban and rural students’ pencil and paper productions, complemented by observations from video recordings of the collaborative engagement of these naïve designers. Students used graphical symbols, analogical, spatial and functional reasoning in their design activities. Choice of materials and tools, the nature of exploratory sketches, variety in design and attentions to issues of stability showed differences between the urban and rural groups. Some potential implications of D&;T units for classroom learning have also been discussed.     

Motivation for creativity in architectural design and engineering design students: implications for design education

The investigation reported here dealt with the study of motivation for creativity. The goals were to assess motivation for creativity in architectural design and engineering design students based on the Cognitive Orientation theory which defines motivation as a function of a set of belief types, themes, and groupings identified as relevant for the development of creativity. Differences between the two groups of students were expected in some of the scores of the belief types, themes, and groupings. Participants were 112 students (52 from architecture, and 60 from engineering) who were administered the questionnaire of the Cognitive Orientation of Creativity. Significant differences in numerous motivational contents were observed between the groups of students. Major characteristics of the architectural design students were an emphasis on the inner world, inner-directedness, and a development of the self, and of the engineering design students being receptive to the environment, and demanding from oneself despite potential difficulties. The findings provide insights for intervention programs targeted at improving architectural and engineering design education.     

The effect of alternative approaches to design instruction (structural or functional) on students’ mental models of technological design processes

The study aimed to examine the relationship between alternative approaches towards problem solving/design teaching (structural or functional), students’ mental modeling of the design process, and the quality of their solutions to design tasks. The structural approach emphasizes the need for an ordered and systematic learning of the design process stages, while the functional approach emphasizes the teaching and study of design functions (rather than stages). Participants were 80 seventh graders, divided into two groups, who were taught a unit on technological problem solving by either approach in the course of 14 classes (21 h) during a semester. Before, during and after the design process of a technological solution the students represented their perception of the design process. The results for both groups were analyzed in terms of: (a) types of models generated; (b) changes in type of models along the learning/design process; (c) defining characteristics of the design process models. Significant differences between the groups’ models were found for most variables examined. The functional approach was more effective than the traditional structural approach for supporting the construction of holistic, flexible, and effective mental models of the design process of technological solutions.     

Question-answering-technique to support freshman and senior engineers in processes of engineering design

In two experimental studies, the influence of question-based reflection on the quality of design solutions was investigated. Students and experts with different know-how and professional experience had to design an artefact that should meet a list of requirements. Subsequently, they were asked to answer a system of interrogative questions stimulating reflection on the solutions with the opportunity to modify or revise them. These questions cause the participants to explain, justify and evaluate their finished design and, hence, aiming at the semantic relations in systems. In all groups significant improvements of the solutions were obtained whereby the improvements of engineers with a lower work-experience (job beginners) were significantly higher as those with higher experience. The integration of a specific type of questioning behaviour in the design education is discussed.     

How an integrative STEM curriculum can benefit students in engineering design practices

STEM-oriented engineering design practice has become recognized increasingly by technology education professionals in Taiwan. This study sought to examine the effectiveness of the application of an integrative STEM approach within engineering design practices in high school technology education in Taiwan. A quasi-experimental study was conducted to investigate the respective learning performance of students studying a STEM engineering module compared to students studying the technology education module. The student performances for conceptual knowledge, higher-order thinking skills and engineering design project were assessed. The data were analyzed using quantitative (t test, ANOVA, ANCOVA, correlation analysis) approaches. The findings showed that the participants in the STEM engineering module outperformed significantly the participants studying the technology education module in the areas of conceptual knowledge, higher-order thinking skills, and the design project activity. A further analysis showed that the key differences in the application of design practice between the two groups were (a) their respective problem prediction and (b) their analysis capabilities. The results supported the positive effect of the use of an integrative STEM approach in high school technology education in Taiwan.     

Learning design and technology through social networks for high school students in China

The subject of design and technology was introduced to the curriculum for high schools in China 10 years ago. However, the teaching and learning of this subject have become difficult for both teachers and students because there is a lack of qualified teachers with design background to deliver this subject in a way to stimulate the learning interests of the students. This paper presents a research that is aimed at improving this situation by integrating the teaching and learning of design and technology within a computational environment as part of social networks sites. The purpose is to enable the collaboration among the students and interaction between teachers and students. In this research, a series of investigations were conducted, by following through several taught subjects in design and technology in prominent high schools in China. Based on these investigations, a theoretical framework for web-based design learning and teaching system in the style of social networking is developed, implemented and tested, emphasizing three features of design: innovation, collaboration, and interaction. This framework has been tested among high school students and teachers in a high school in Nanjing. It identified and validated necessary techniques and design features required to make an education-related social networking site effective and affective for the students and teachers. The results of this research indicated that social networking sites have significantly positive values in design education, especially for the collaboration and interaction on the subject of design and technology.     

中小学生追捧动漫玩具热销背后藏安全隐忧

头部有尖刀的刺枪、渗着寒光的匕首、带有剑鞘造型细长剑……又是一年开学日，西安市不少中小学附近的文具店内，开始热销此类未开刃的金属制小型“武器”，给学生安全带来隐患。 据了解，在网络时代成长的中小学生大多酷爱动漫、网游，更对其中的游戏角色充满崇拜之情，因而衍生商品颇受追捧。在学校周围的文具店里，随处可见手链、项链、贴纸、笔记本等文具饰品，其中不乏也有匕首、小刀金属模具等一些安全无法保证的商品。     

Improving engineering skills in high school students: a partnership between university and K-12 teachers

The level of science skills in Spanish students are significantly below the average of the Organisation for Economic Co-operation and Development, and university teachers agree that the level of freshmen students’ skills is too low. Moreover, the number of engineering enrollments has been declining in recent years. The purpose of this study is to improve both the level of knowledge and skills of students upon entrance into engineering programs and their general opinion about engineering studies. The aim is to establish the importance of proper coordination between groups involved in the overall educational process and to avoid, at least in part, the decline in recent engineering enrollments. The project had the following four phases: (1) determination of the freshmen’s weakest concepts; (2) assessment of high schools students’ knowledge; (3) development of educational activities; and (4) re-assessment of high school students. These measures were complemented with the high school teachers’ opinions about the students improvements and analyses of the evolution of engineering enrollments. Most of the participants significantly improved their knowledge and skills. Similarly, high school teachers believed that the attitude of the students toward engineering improved significantly.     

中专学校计算机教学浅谈

随着计算机的广泛应用,计算机教学日益成为现代教学的重要方法,在教学中如何让学生更好、更快地学会计算机课程,我在多年教学实践的基础上,总结了几条行之有效的教学经验,以供大家参考.     

The attitudes of interior design students towards sustainability

To measure attitudes toward environmental issues, interior design students responded to a four-part survey: demographics, ecology, sustainability, and comments. The ecology section was composed of modifications of questions from the New Ecological Paradigm Scale (Dunlap et al. Journal of Environmental Education, 9:10–19, 2000). The researchers composed the items in the sustainable section to reflect perceptions related to the use of sustainable products and solutions in interior design scenarios. Although the ecology and sustainability survey results exhibited great variability, responses to individual items mostly averaged towards the more pro-environmental and pro-sustainability sides of the scales. While average scores on the ecology section of the survey showed the respondents as a group to be moderately pro-environmental, most items revealed a considerable amount of undecided ratings and quite a few students who perceived the environment to be somewhat invincible. The data also indicated a discrepancy between what students think they know (sustainability section) and what the students actually reveal in their open-ended answers (comments section). The survey results imply that educators, who themselves are likely to be pro-environment, cannot merely assume that their students share the same values and attitudes. Beginning instruction with explanations and examples of sustainable methods and products will not be sufficient to communicate the delicate balance between Human use of resources and Nature’s ability to replenish. Design educators need to set the stage for sustainability rather than just assume that students will embrace the concept. Hopefully, more research studies will inspire others to evaluate their own students’ feelings about the environment.     

Mechanical engineering and issues on teaching mechanical engineering design in Turkey

Students with relatively low affinity and/or weak ability for science and mathematics have been presently acknowledged into Mechanical Engineering (ME) departments around the world. This has resulted in apparent lowering of fully competent graduate engineers, due to insufficient comprehension and its concomitant cognitive issues. Now, the complexity and the demand of ME education have been extremely unbalanced with recruited students. This conflict between the education process and less knowledgeable students has been adequately acknowledged, but remedies for this global issue are not yet available. This is no longer sustainable. The paper gives insight into (individual and combined) plausible reasons for fewer fully competent graduate engineers, taking the specific case study in Turkey. It proposes a generic approach, which can be extended to courses of any university/degree subject. Findings on student learning are provided using a hierarchical decomposition. A proposed remedy for this issue has been thoroughly evaluated, and accountability measures, qualitative data and a survey has been conducted for the ME design course taught in Turkey. The findings indicate that the new recruits are not fully to blame for the conflict, because there have also been other reasons for the issues within teaching. It identified multiple instances of the reasons such as unnecessary complexity of textbooks, unsolved contradictions even between the technical component design standards and etc. If these are considered by educators, this will help to reduce the perceived degree of teaching difficulty, and have a positive effect on the quality of graduates. It may even assist in attracting higher ability students into ME.     

Influence of design training and spatial solution strategies on spatial ability performance

Numerous studies have reported that spatial ability improves through training. This study investigated the following: (1) whether design training enhances spatial ability and (2) whether differing solution strategies are applied or generated following design training. On the basis of these two research objectives, this study divided the participants into design and non-design groups. Each participant in these groups was required to complete three spatial tests and one solution strategy questionnaire. This study found that the participants in the design group outperformed those in the non-design group regarding spatial visualization and spatial relations; however, the two groups showed no difference in visuospatial perceptual speed performance. The design and non-design groups adopted different solution strategies; the design group used the holistic strategy, whereas the non-design group used the analytical strategy.