Learners review the fundamental laws of algebra including the commutative law of addition, the commutative law of multiplication, the associative law of addition, the associative law of multiplication, and the distributive law. Examples are given.

In this animated activity, learners read about the properties of a square and its components. They then work practice problems to find the perimeter and area of squares.

In a series of practice problems, learners use the addition or subtraction method to solve systems of linear equations, also called "simultaneous linear equations."

In this animated and interactive object, learners calculate the area and centroid of a circle.