A resource of minilessons using quick images and strings of related problems with the 20-bead MathRack for use each day to support the development of early number sense to 20. Emphasize the quick images and the 5 and 10 Mathracks in the fall and, after using Bunkbeds and Apple Boxes, use the section designed for the 20-bead Mathrack to start working on the basic addition facts to 20.