Subtraction Strip Board – Childrens House Range.
Using the Subtraction Strip Board, the child practices the equations of the subtraction tables 1-18.
Natural wooden strips corresponding in length to the squares 1-18 are used to indicate the number to subtract from (minuend) and 1 set of blue strips used to subtract with (subtrahend).
A set of red strips is included for further explorations. The 2 sets of strips are stored in hardwood boxes.
Item Number – CHM0149