Practice A: Quadrilateral & Parallelograms
In this quadrilateral learning exercise, students observe models of quadrilaterals and identify parallelograms. They use a T-chart to identify information needed to prove a parallelogram. This one-page learning exercise contains 15 problems.
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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
Properties of a Parallelogram
More than just a worksheet, the resource provides a thorough guide to navigate through the land of parallelograms. Filled with definitions and theorems, the resource supports learners through problems such as proofs and finding missing...
9th - 12th Math CCSS: Adaptable
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
Evaluating Statements About Length and Area
Class members complete an assessment task by identifying whether statements about triangles and quadrilaterals are always true, sometimes true, or never true. They then participate in a sorting activity with the same objective.
9th - 12th Math CCSS: Designed