This resource was designed and created by a professional curriculum designer and Montessori teacher. The addition strip board, subtraction strip board, multiplication bead board, and division bead board and the accompanying finger chart work is part of a set of memorization exercises. The purpose is to help the child through their passage from sensorial to abstraction, while memorizing operational facts. All presentations include: •Purpose •Direct Aims •Indirect Aims •Points of Consciousness •St