Students calculate the area and diameter length of a circle. In this geometry activity, students investigate the use of pivots as they review parts of a circle. They create a circle using cardboard and label all the parts.

Third graders use the book "The Greedy Triangle" to practice measuring perimeter and area. They also calculate the length of objects.

In this rational expression worksheet, students graph rational equations, evaluate limits, state intercepts, asymptotes, and roots and factor.  This worksheet is designed as a test to be completed with a calculator. 

Fifth graders use tan to solve problems involving right-angled triangles. They solve equations of the form tan(8) =a, for a between 180 degrees and 360 degrees. They state the value of tan (8) in special cases.