Understanding open sentences is a stepping stone for understanding more complex math problems. This tutorials introduces open sentences and gives you an example of how to solve one!

You can't do algebra without working with variables, but variables can be confusing. If you've ever wondered what variables are, then this tutorial is for you!

Inequalities come up all the time when you're working algebra problems. In this tutorial you'll learn what an inequality is, and you'll see all the common inequality symbols that you're likely to see :)