1. The Geometry Standard Principles and Standards for School Mathematics National Council of Teachers of Mathematics 2000

2. Instructional programs from pre- kindergarten through grade 12 should enable all students to: Analyze characteristics and properties of two- and three-dimensional geometric shapes and develop mathematical arguments about geometric relationships. Specify locations and describe spatial relationships using coordinate geometry and other representational systems.

3. Instructional programs from pre- kindergarten through grade 12 should enable all students to: Apply transformations and use symmetry to analyze mathematical situations Use visualization, spatial reasoning, and geometric modeling to solve problems

4. Geoboard Quadrilaterals Mark off a 3 by 3 section on your geoboard. All your exploration will be done on these 9 pegs. How many non-congruent quadrilaterals can you form? Use your geoboard to explore and then record your discoveries on geoboard recording paper.

5. Geoboard Quadrilaterals Compare your set of quadrilaterals with others to find those you may have missed. Can you categorize the quadrilaterals in any way? How?