Other
Beanz: Variables, Constants, and Data Types
Learn variables, constants, and data types with exercises you can do to test your knowledge.
Other
Beanz: Code Snippets: Variables
Learn how variables in code work in several computer languages.
Khan Academy
Khan Academy: Challenge: Bucktooth Bunny
Use the power of variables to give a bunny bigger eyes and teeth in this coding challenge.
Khan Academy
Khan Academy: Using Variables
Some practice problems with variables in computer programming.