If you have trouble remembering how to graph different mathematical functions, these simple figures with their dancing arms can help. At the very least, ...

Unlike a linear, graph, a quadratic graph has an equation which includes an x squared term.

Graphing calculators have more advanced capabilities for higher-level math than scientific calculators, with larger, more dynamic screens for graphing functions and plotting coordinates.

A month later, my understanding of trigonometric functions likewise deepened as I took over the class to learn to teach students using those same graphing calculators.