GeoGebra

GeoGebra is a computer program that helps people learn about math, geometry, algebra, calculus and more! It uses a mix of graphics, text and numbers to make learning more visual and interactive. It has special tools to help draw lines, circles, polygons and other shapes, plus tools for measuring things like angles, lengths and areas. You can also enter equations and watch them change when you move the objects around. It's perfect for helping you to see how math works!