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Unit Plan
Cut the Knot

Cut the Knot!: Geometric Construction With the Compass Alone

For Students 9th - 10th Standards
This site explains the possible uses of a compass when drawing. There are numerous exercises for using a compass with links to the solutions - click on the red checkmarks for these. The site discusses mathematicians who contributed to...
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Unit Plan
National Council of Teachers of Mathematics

The Math Forum: Drexel University: Math Forum: 3 D Drawing and Geometry

For Students 9th - 10th Standards
Instructions on a simple way to get started drawing in 3-D by drawing objects using an isometric grid.