Color Wheel (Moses Harris, Moses Harris's chart was the first full-color circle. The 18 colors of his wheel were derived from what he then called the three 'primitive' colors: red, yellow and blue. At the center of the wheel, Harris showed that black
Instead of the mats they can make play dough snakes to write number (maybe use wood numbers) then use a ten frame. Or pull a teen card, recreate with wood numbers, then represent with play dough spheres on ten frames.