This study investigated the effects of students' constructions of geometrical concepts related to the circle on their construction and validation of proofs. The participants were 110 high school students. A questionnaire was administered; both qualitative and quantitative methods were used to analyze the results. Afterwards, in-depth interviews…

Engineering drawing is valuable in capturing geometric features, conveying engineering ideas, and creating a blueprint of the intended product. Engineering students usually perform orthographic projections, imagining a 3D situation and sketching its 2D representation. That requires imagination and mental visualization, determined by the learner's…

This study aimed to evaluate learning outcomes of drawing orthographic projections between two groups of students: one group that learnt orthographic projections via audio-visual media and the other group through written material. An experimental design was used to determine the percentage increase in learning outcomes of both methods with…

Most technology and engineering (T&E) classes are elective, so teachers are always looking for ways to market programs, engage students, and remind administrators and school board members about the good things T&E teachers do with and for kids. In this article, the Unionville High School (PA) Technology and Engineering Department describes…

Today's students enter engineering colleges with different technical backgrounds and prior graphics experience. This may due to their high school of provenience, which can be technical or non-technical. The prior experience affects students' ability in learning and hence their motivation and self-efficacy beliefs. This study intended to evaluate…

Information graphics, or "infographics," are widely used to convey complex science and its importance to society. To be educated consumers and citizens, students need to understand and be critical of information presented in graphical form. Researchers, accordingly, have called for fostering the "representational competence" of…

The purpose of this study was to investigate identifiable differences between performance and cognitive assessment scores in a 3-D modeling unit of an engineering drafting course curriculum. The study aimed to provide further investigation of the need of skill-based assessments in engineering/technical graphics courses to potentially increase…

Of the eight practices of science identified in "A Framework for K-12 Science Education" (NRC 2012), helping students develop and use models has been identified by many as an anchor (Schwarz and Passmore 2012; Windschitl 2012). In instruction, disciplinary core ideas, crosscutting concepts, and scientific practices can be meaningfully…

This article describes the Hill-Climb project of a second level Computer-Aided Drafting and Design (CADD) class. The author primarily designed the activity to increase student understanding of the assembly drawing process and its components. The emphasis on problem solving adds a dimension that can aid students in their other classes as well. By…

Employers require pristine drawings that convey clarity and precision for the production of goods. Can a change in sequence of instruction be expeditious and help teachers better prepare their students for the workplace? Research suggests that combining traditional drafting and computer-aided drafting (CAD) instruction makes sense. It is analogous…

This article provides practical guidance for science teachers to help students who love both science and writing, and are struggling to find a career that will allow them to combine these disparate talents and interests. It includes descriptions of career paths, suggestions for exploratory steps, and links to sources of additional information. The…

This article showcases August's School Web Site of the Month, http://magnoliaisdcommunities.org/communities/bschuster, which was produced by Bradley H. Schuster (bschuster@magnoliaisd.org) and his students at Magnolia High School, Magnolia, Texas. Schuster teaches architectural drafting and building trades classes at both Magnolia High School and…

A group of high school students created a drawing of a circle using a device called the Drawing Machine. To describe their experiences, we propose an alternative to the idea that to master a tool one must create a mental version of the tool. We suggest, instead, that as students change their relationships to a tool over time, their lived-in spaces…

As the drafting instructor at Tri-County Career Center (TCCC) in Nelsonville, Ohio, the author is proud and pleased to give students real-life drafting experiences that apply learned theory. One of the best experiences his students have had involves taking part in building a custom home. Another is producing authentic house plans. The author also…

Chances are that many high school students would not know how to use drafting instruments, but some might want to gain competence in computer-assisted design (CAD) and possibly computer-assisted manufacturing (CAM). These students are often attracted to tech courses by the availability of CAD/CAM instructions, and many go on to impress employers…