This applet will show you how to divide the parallelogram into pieces, arrange them together to form a rectangle, and then use the formula for the area of a rectangle to find the area of the parallelogram.

To find the area of a triangle, try to make a parallelogram using a copy of the triangle.

Sixth graders find the area of rectangles, triangles, parallelograms, and trapezoids by using formulas or by composing into rectangles or triangles.

Demonstrates how to calculate the area of two-dimensional shapes using formulas. Covers parallelogram, triangle, trapezoid, and circle. Includes a video modeling how to find the area of a circle and a triangle. [0:59]

[Free Registration/Login Required] In this instructional activity, young scholars build geometric models of graduation caps using stiff paper. The activity requires the application of skills in finding surface area, understanding...