EZ Graphing Black Hard Slide Cover for TI 84 Plus, TI 84 Plus C Silver Edition, TI 89 Titanium (not for TI 84 Plus CE) 6 inch side ruler, 6 centimeter top ruler XY axis template for quick axes, 12 Math functions Perfect for students taking Geometry, Algebra, Trigonometry, Precalculus, Calculus Made in the USA Save $$$ by eliminating the need for graphing paper