Learn about the trajectories in two dimensions through simulation and examples. Some of the concepts identified are motion and velocity.

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Student groups use a "real" 3D coordinate system to plot points in space. Made from balsa wood or wooden dowels, the system has three axes at right angles and a plane (the XY plane) that can slide up and down the Z axis. Students are given several coordinates and asked to find these points in space. Then they find the coordinates of the eight corners of a box/cube with given dimensions.

Here is a huge collection of teacher resources for teaching 2-D and 3-D shapes. Includes flash, smartboard, and powerpoint presentations, as well as worksheets and helpful hints.

A net is a two-dimensional version of a three-dimensional solid. Watch this tutorial for an introduction to nets. [5:25]