Area of Parallelograms 
In this area of parallelograms activity, students solve for the area of 6 parallelograms. Answers are included on page 2. No review of formula is given on activity.
5th - 6th Math 5 Views 25 Downloads
Area and Perimeter of Regular and Irregular Polygons
Extend young mathematicians' understanding of area with a geometry lesson on trapezoids. Building on their prior knowledge of rectangles and triangles, students learn how to calculate the area of trapezoids and other irregular...
3rd - 6th Math CCSS: Adaptable
Find the Area of a Parallelogram by Decomposing
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...
4 mins 5th - 7th Math CCSS: Designed