Isometric Shape Draw
Use this teaching resource to demonstrate the representation of 3D shapes using isometric paper.

Instructions
http://www.teacherled.com/2008/03/18/isometric-shape-draw/

Resource
http://www.teacherled.com/resources/isodraw/isoshapeload.html

Isometric Shape Exploder
This resource demonstrates isometric shapes and enables classroom discussion about the number of small cubes in each shape. After discussing the shape it can be exploded to show its components. It can also be toggled to rotate. There are 7 isometric shapes to consider.

Instructions
http://www.teacherled.com/2008/06/02/isometric-shape-exploder/

Resource
http://www.teacherled.com/resources/isoexplode/isoexplodeload.html

This interactive whiteboard resource is useful for demonstrating the volume of cubes and cuboids.

Instructions
http://www.teacherled.com/2008/09/09/cuboid-exploder/

Resource
http://www.teacherled.com/resources/cuboidexplode/cuboidexplodeload.html

Click on two cards to turn them over. If they match, they are cleared from the board. If not, they remain on the board. How many turns will it take you to clear the board?

http://www.interactivestuff.org/match/maker.phtml?featured=1&id=15

This is a very cool and very engrossing set of puzzles. Use the cubes to build the shape that has the correct front, top and side views. Now try to solve the puzzle using the minimum number of cubes. The shape can be spun in 3-dimensions. Three thumbs up!

http://www.fi.uu.nl/toepassingen/02015/toepassing_wisweb.en.html

This virtual manipulative allows you to display, rotate, and resize Platonic solids. It also allows you to select vertices, edges, and faces, and observe that the number of vertices minus the number of edges plus the number of faces is always equal to 2 (Euler's formula).
http://nlvm.usu.edu/en/nav/frames_asid_128_g_1_t_3.html?open=instruction...