Sliding over a corner makes a rectangle. The resource demonstrates why the formula of the area of a parallelogram works. As part of a larger playlist on basic geometry, the video works examples dealing with parallelogram areas.

Concepts

area of parallelograms, parallelograms, area of rectangles, area, area formulas

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Additional Tags

math

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Instructional Ideas

• Have class members cut the triangle off of a parallelogram and move it over to show it forms a rectangle

Classroom Considerations

• Requires individuals to know the formula to find the area of a rectangle
• Assumes the class can solve one-step linear equations

• This video is hosted on YouTube

Pros

• Shows the arithmetic and algebra used in the examples
• Links to more resources on finding areas of parallelograms

Cons

• Incorrectly states the perimeter formula for a parallelogram

Common Core

6.G.A.1 MP2 MP6