Learners examine the properties of a triangle and work practice problems to find a triangle's perimeter and area.

Learners follow step-by-step instructions for finding the lowest common denominator for a group of algebraic fractions and then enter their answers to three problems. Immediate feedback is provided. This activity has audio content.

Learners read definitions of the terminology associated with algebraic operations and then follow steps to use the fundamental laws of multiplication to simplify algebraic expressions.

In this interactive object, learners simplify ratios and solve problems using proportions. All terms are defined.