A good graphing calculator can boost your math and science skills. Modern graphing calculators allow you to solve for a variable without rearranging an equation, use a spreadsheet for statistics similar to Excel, and graph conic sections in their various forms. At a certain point, a graphing calculator becomes a requirement, and investing in a good one makes a difference. I carry around a Casio fx-CG50 PRIZM® Color Grapher and highly recommend it; however, there are plenty of graphing calculators that are both powerful and affordable on the market. When I’m working on my computer or phone, I use Desmos, which offers an outstanding free graphing calculator.