Manipulatives, instructions and teaching notes for learning about Base Ten. This set includes 100 one centimeter cubes, 30 rods (composed of ten cubes to represent the tens' place), 10 flats (composed of 100 cubes to represent the hundreds' place), one cube (composed of 1,000 cubes to represent the thousands' place), p Sonlight resource: https://www.sonlight.com/products/base-ten-starter-set-k-3