Teaching with the 10-Box

Teaches all the combinations making 10.  The box can also be used to teach sequence by building a staircase as well as addition, subtraction and problem solving.

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The teacher holds the 10 by 10 box with a 7-block and a 3-block stacked to make 10, and an eight block next to them, and says, 'seven needs three. Eight needs?' The child answers, 'two.'

Learning the Combinations that Make 10
Finding Missing Addends

Students learn to find the missing addend in combinations of 10. The teacher places a block in the 10-box and asks the child to find the block that goes with it to be as big as 10.

From Experimenting with Numbers.

Recording Addition Facts

In this workbook page, children are asked to write the missing addend in the blanks. They draw on their knowledge of the blocks which went together in the 10-box.

From Structural Arithmetic Book I.


A page of the workbook with a picture of the 10-tray and a series of addition problems, each add up to 10 and are missing one addend.

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