College professor Dan Bach offers a review of various basic topics in arithmetic, pre-algebra, and algebra. Order of operations, exponents, square roots, variables, and combining terms are just a few of the many topics covered.

Calculating the circumference or perimeter of a circle has gotten easier with this formula and practice for finding the circumference.

Students will use a variety of activities and games to learn how to round numbers.This lesson plan was created as a result of the Girls Engaged in Math and Science, GEMS Project funded by the Malone Family Foundation.

On this interactive site students learn to round numbers to the nearest ten thousand, determine the place value of any digit, and use ordinal numbers.

In this activity, students use the Geoboard to determine the perimeter of polygons. They learn to picture square roots visually as the side length of a square.

Round money to nearest whole dollar amount.