A collection of external links that could be useful, fun, distracting, etc…
Calculation Aids
To help check your algebra:
Wolfram Alpha:
Recommended for checking things like nasty quadratics, for example, entering this:
0 = 3 + 2t -.5*9.8t^2
would give the roots of this equation (you still have to use your physics understanding to determine which root is the correct one!).
Desmos, (Online Graphing Calculator)
I haven’t used it much, but I think it’s quite powerful.