Quadrilateral Properties Chart
Tenth graders investigate quadrilaterals. In this geometry lesson, 10th graders organize and summarize the properties of quadrilaterals as they identify which quadrilaterals have which properties.
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Investigating Properties of Parallelograms
Given different parallelograms, geometers make conjectures about their properties. They then work in small groups to prove (or disprove) their conjectures. The activity provides many opportunities for making conjectures and critiquing...
7th - 10th Math CCSS: Designed
Investigating Properties of the Diagonals of Quadrilaterals
Tenth graders investigate quadrilaterals. In this geometry lesson, 10th graders investigate the properties of the diagonals of quadrilaterals. The dynamic nature of Cabri provides opportunity for conjecture and verification. The...
New Review Transformations and Symmetry
Flip, turn, and slide about the coordinate plane. Pupils define the rigid motions and experiment with them before determining the relationships of the slopes of parallel and perpendicular lines. The sixth unit in a nine-part series...
9th - 10th Math CCSS: Designed