The OEM Crayola Model Magic Classpack Clay includes white, red, blue, and yellow 1 oz. packs. These primary colors can be mixed completely for new colors or partially for a marbleized effect. Each pouch allows for easy quantity control, making it convenient for students to take home for homework projects. The pouches help teachers dispense the exact amount needed, resulting in less waste. This classpack also includes a free classroom lesson plan booklet filled with creative ideas for using Model Magic in various educational projects.