Online Calculators: Desmos & TI-84 Plus Emulator

Find Math I, Math II and Math III curriculum @ Mathematics Vision Project

Additional websites you might find helpful:

Online Textbooks for Algebra I, Geometry, Algebra II, Pre-Calculus

There are many other online tutorial and math assistance sites available. Pick your favorite search engine (Google, Bing, Ask.com, etc.) and search for "free math help" or a specific topic such as "multiplying rational functions." Look around, have fun, and learn!!