Subtraction Strip Board and box containing strips : 1 set The Discovery of the Child and tactile perceptions

and tactile perceptions

This is a set of 10 precision finished solid wooden rods with unit marked in two colours

by Angeline Stoll Lillard

12 yellow pencils in a custom box

Cards show the various external parts of the animal

Subtraction Strip Board and box containing strips : 1 set The Discovery of the Child and tactile perceptionsThis 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.