Parallelogram Teacher Resources
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Investigating Properties of Parallelograms
7th - 10th CCSS: Designed
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...
Proving a Quadrilateral Is a Parallelogram: Lesson
3 mins 8th - 11th CCSS: Adaptable
If it has the properties of a parallelogram, it must be a parallelogram. A segment of a playlist on geometry presents the converses of the properties of a parallelogram. Given a quadrilateral with specific characteristics, the video...
The Area of Parallelograms Through Rectangle Facts
6th CCSS: Designed
Slide a portion of a parallelogram to make a rectangle. Pupils cut parallelograms and create rectangles from the pieces. They make the connections to the areas of the figures and realize that the formula for area is the same for both...
Proving a Rectangle Is a Parallelogram
9th - 12th CCSS: Designed
Take the time to prove what seems obvious. The resource provides pupils a figure of a rectangle, which they use to develop a proof showing that the rectangle is also a parallelogram. Scholars must rely on the definition of a rectangle to...
Find the Area of a Parallelogram by Decomposing
4 mins 5th - 7th CCSS: Designed
Using the area formula makes sense, but what about when finding the area of a parallelogram? The slanted figure is decomposed in the video to show how it still applies the area formula of base times height. The video addresses common...