MATHEMATICS

The two-compartment box with green lid containing plastic chips, one set with equations and one set with the answers for the 1-18 subtraction combinations.

Complete set of material, including the board, 100 red beads, small cards and a small red disc.

Set of 5 charts and a yellow box of answer chips.

The two-compartment box with yellow lid containing plastic chips, 1 set with equations and one set with the answers.

Wooden board and a box containing 81 green beads and 9 green skittles.