The learning activity explores area. Students determine the area of their garden by counting squares.

This is the second version of a task asking students to find the areas of triangles that have the same base and height. This presentation is more abstract as students are not using physical models. They still determine the area of each...

[Free Registration/Login may be required to access all resource tools.] The video describes how to count the area in a grid where each square on the grid is one square unit of area. The video is followed by practice problems covering the...

Dozens of statistical terms are defined and illustrated in this glossary.