Interactive assessment that tests knowledge of substitution properties of equality. Some problems involve substituting values for variables, while some involve substituting expressions for variables.

Given a set of four graphs, match each graph with the graph of it's derivative. This exercise helps to visualize the relationship between a graph and it's derivative, and over 50 graphs are available (although only four are used at one time).

Simplify polynomial expressions which require multiplying, combining like terms, etc. The "matching" assessment will determine levels of knowledge with polynomial manipulation.

Given eight trigonometric functions containing absolute value elements, choose whether each is differentiable or non-differentiable. At the conclusion of the exercises, the site returns a score which helps judge understanding of the topic.