Sixth graders apply what they know about area of other polygons to develop a formula for finding the area of a triangle.

Practice using your graphing calculator for area and volume problems. If you get stumped or if you would like to check your work, then select the View Solution button, which is located directly under each problem.

The purpose of this task is to use the Pythagorean Theorem and knowledge about quadrilaterals in order to construct squares of different sizes on a coordinate grid. Aligns with G-GPE.B.7.

This interactive activity will lead you to the formula that was discovered by G. Pick in 1899. Gather all the data obtained in each of the activities and make a connection between the interior points, the points on the edge and the area...

This task is a natural follow up for task Rectangle Perimeter 1. After thinking about and using one specific expression for the perimeter of a rectangle, they now extend their thinking to equivalent expressions for the same quantity....