This collection contains apps that will help teachers implement Common Core Standard 6.G.1 for 6th grade mathematics.

This app allows you to compare areas of a parallelogram and a rectangle in order to discover the formula for the area of the parallelogram.

This app allows you to compare areas of an arbitrary triangle and a parallelogram in order to discover the formula for the area of the triangle.

This app allows you to compare areas of an arbitrary trapezoid and a parallelogram in order to discover the formula for the area of the trapezoid.