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Students find the volume and surface area of a rectangular box (e.g., a cereal box), and then figure out how to convert that box into a new, cubical box having the same volume as the original. As they construct the new, cube-shaped box from the original box material, students discover that the cubical box has less surface area than the original, and thus, a cube is a more efficient way to package things. Students then consider why consumer goods generally aren't packaged in cube-shaped boxes, even though they would require less material to produce and ultimately, less waste to discard. To display their findings, each student designs and constructs a mobile that contains a duplicate of his or her original box, the new cube-shaped box of the same volume, the scraps that are left over from the original box, and pertinent calculations of the volumes and surface areas involved.

Students find the volume and surface area of a rectangular box (e.g., a cereal box), and then figure out how to convert that box into a new, cubical box having the same volume as the original. As they construct the new, cube-shaped box from the original box material, students discover that the cubical box has less surface area than the original, and thus, a cube is a more efficient way to package things. Students then consider why consumer goods generally aren't packaged in cube-shaped boxes, even though they would require less material to produce and ultimately, less waste to discard. To display their findings, each student designs and constructs a mobile that contains a duplicate of his or her original box, the new cube-shaped box of the same volume, the scraps that are left over from the original box, and pertinent calculations of the volumes and surface areas involved.

spex Tabs is an easy 3D software for drawing 3d shapes, printing out the nets of shapes and making 3d paper models. Suitable for pupils aged 6 - 14 years, its an inspired educational software for children which meets a real need in the classroom, and it is great fun for making 3D paper models at home too! aspex Tabs will display the orthographic projection of the model you design, in both the 1st and 3rd angle projection.

A demonstration of 3d shape drawing in Yenka Software http://yenka.com

A demonstration of 3d shape drawing in Yenka Software http://yenka.com

David Burghardt writes, "My quest to improve technological literacy in K-16 education has been the unifying theme of my work for more than a decade. This quest shapes the research I perform, the texts I write, the courses I create, the departments I chair, and of course, my teaching. I have had the good fortune to direct several multi-million dollar grants from the National Science Foundation over the past twelve years. Of the 11 books I have written, the two most recent focus on engineering and design. I have created courses on Children's Engineering, ELED 239, and the Impact of Technology on Society, TPP 201. I created and co-direct the Center for Technological Literacy, chair the Engineering Department, and am working with my students to create active teaching/learning classrooms. "

Workflow model for making a craft-robo shape from a vector art file. Tools needed include Adobe Illustrator and Fireworks.

Founded a year ago as my personal playground, today Dezignus is friendly, growing community of people interested in graphic design. Our mission - improving professional skills of designers by providing useful freebies: vector, ps brushes and shapes, textures and backgrounds, icons etc. We follow latest design trends and trying to provide material of current significance.

Small Stella, Great Stella and Stella4D are computer programs which let you create and view polyhedra on the screen, then print out the nets required to build your own models out of paper. Small Stella has a fixed list of built-in models and can print out nets for over 300 polyhedra.