Time to crunch the numbers! Young scholars use an interactive number cruncher to practice operations with whole numbers. They input a number and watch as the number cruncher produces the output and then use the data pairs to determine a...

Express your wonder at this resource. Middle schoolers solve 10 short problems in the expressions and equations domain. They apply operations with scientific notation, set up and solve equations, and analyze linear equations.

With so many math standards to fit into a school year, it can be difficult keeping track of what you have and have not covered. This collection of Common Core checklists allows you to maintain a running record of when each...

Pick up some valuable pointers on how to simplify and factor algebraic expressions. When you finish working your way through the pages, you can take an online "Test Bite" and check your understanding.

This lesson demonstrates how to evaluate numerical and algebraic expressions that contain powers following the order of operation rules.

Find a quick, concise explanation of a mixed expression. An example is given and clearly explained.

Find a quick, concise explanation of negative exponents. An example is given and clearly explained.

Dr. Math at the Math Forum explains the difference between equivalent expressions and equivalent equations.