Pratt School of Engineering, Duke University

Learners construct and use a "real" 3D coordinate system out of balsa wood and foam core. They will then be able to locate coordinates in space.

Learners display their findings after a study of surface area and volume. They build a mobile to show a commercially available box and a constructed cubical box of the same volume.

Learners design their own experiment to explore the permeability of different materials such as soil, sand, gravel, and marbles.