Subtraction Strip Board and box containing strips : 1 set The Discovery of the Child The diagonal squares represent the

The diagonal squares represent the hierarchies from million to millionths and differentiate between decimals and whole numbers

A yellow plastic box

" where adolescents and their teachers would live in a self-contained rural community

preschool teachers

informative stories and anecdotes along with photos and diagrams explain why the Montessori approach works so well for children

Subtraction Strip Board and box containing strips : 1 set The Discovery of the Child The diagonal squares represent theThis set includes one hardwood board with 18 numbered squares across the top and 12 squares downward. A wooden box with 9 red and 9 blue wooden strips printed with the numerals 1 9 and 18 natural wooden strips of varying lengths are provided for the exercises. The natural strips indicate the value to subtract from and the blue strips indicate the value to be subtracted.