This set of 240 Unifix Cubes has been packaged for use with the Operational Grid and the Pattern Building Cards. There are 60 each of the four colors used on the Pattern Building Cards - red, blue, yellow and green.. Introduce your students to the Gold Standard in math manipulatives!. Includes sixty each of four colors: red, blue, yellow and green. Set of 240 unifix cubes. 4-11 years. Grade PK-5