This set of Unifix Cubes provides a hands-on approach to presenting mathematical equations by allowing teachers to demonstrate abstract concepts in a concrete way. Used in conjunction with our original Unifix Cubes, teachers can illustrate multiple representations of the same equations to help their students make the connection from the concrete to the abstract. This set of 100 cubes includes 30 white operations cubes, 20 black cubes with algebraic symbols, 50 black number cubes and a teachers guide.