Math Classroom Supplies
All math classes (except Calculus) - The recommended calculator is a TI 30X IIS
Calculus - You must have a graphing calculator. The recommended model is a TI 84 plus
Geometry - You will need a protractor and a compass. Any protractor will do fine, but many compasses are poorly made and make it difficult to use. I recommend choosing one that has a turning gear used to increase or decrease the size of the circle's radius. Here is a link for one that I have used.