This Montessori printable operations material helps children learn and practice math operations through a hands-on, concrete method. It helps children visualize math operations and fosters a solid understanding of numbers. This bundle contains 11 materials designed for the operations of addition, subtraction, multiplication, and division. These materials are used in primary (Casa) Montessori classrooms (ages 2½ to 6 years). Includes: addition strip board, charts & instructions addition equation slips division charts & instructions unit division board & instructions division equation slips multiplication charts & instructions multiplication equation slips subtraction strip board, charts & instructions subtraction equation slips math booklets - sequential math booklets - random Equation slips are color-coded (Montessori colors) and also without color-coding. The files are in PDF format. The download is a ZIP file you must unzip before accessing the individual PDFs.