Teaching with the Dual Board
Teaches place value; addition and subtraction of 2 digit numbers; regrouping; multiplication of 10, 9, 8, and 5.
Order the Dual Board »
Building 2-Place Numbers in the
Dual Board
Children build a 2-place number, such as 28, by putting two 10- blocks and eight 1-blocks (single cubes) in the Dual Board. Then they measure the number by placing the blocks in the number track. This gives them both the cardinal and the ordinal aspects of numbers. The Dual Board helps children see the structure of 2-place numbers. The number track helps children see where numbers come in the number sequence.