Area of Parallelograms and Triangles
Students explain the formula for finding the area of a paralellogram and its relation to the area of a rectangle. Finally, they construct the formula for the area of a paralellogram.
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Finding Areas of Polygons, Variation 1
An exercise in finding the area of polygons by decomposing into triangles and composing into rectangles is the focus of this resource. Make several copies of the worksheet for each participant. Ask learners to use colored pencils to...
5th - 9th Math CCSS: Designed
Woodworkers and Finishers: Working with Area
Connecting math to furniture building comes in handy when the dimensions change and the cost of each piece needs to reflect the higher cost. Starting with a drawing of given quadrilaterals, learners calculate the original area and then...
7th - 9th Math CCSS: Designed