The Checker Board is used for short and long multiplication with the hierarchies in the decimal system up to 100,000,000. To avoid bead movement, the wood surface is covered...
This series of prisms demonstrates to the child the change in width (breadth), while the length remains constant. Practice with the Brown Stair indirectly prepares the child for...
The Colored Counting Bars correspond in length and color to the Cubing Material. This material is a transition between the bead bars and the solid material. The set consists of...
Advanced activities using tangrams and pattern blocks to develop the concepts of congruency, similarity, and equivalency as well as follow up activities for areas of all polygons.