- Desmos — Online graphing tool and calculator. Graph functions from equations or tables of values, perform regressions, and much more.
- Geogebra — Explore geometric concepts. Easy-to-use interface makes creating shapes simple.
- Symbolab — Solve equations, showing steps along the way. Excellent for checking homework or solidifying mathematical concepts. Can also be used to generate graphs.
- Wolfram Alpha — Computational knowledge engine. Great for obtaining information about functions, including graphs, intercepts, alternative forms, derivatives, and so on.
- Khan Academy — Site with video tutorials and worked examples.
- PatrickJMT — More video tutorials.
- IXL — Practice questions for courses spanning all grade levels.