The manipulatives can be used for review when needed. Once a child understands, have him use paper exclusively. Transfer to paper by doing each step with manipulatives and showing how it is represented on paper.Continue with problems requiring regrouping into the 100s place.Continue until this process is understood and automatic.Then count the tens and write the total in the tens column. When you get to ten, exchange the ten unit cubes for a ten bar and place it with the tens. Continue with problems not requiring regrouping into the 100s and even 1000s place (if you have 1000s blocks). Combine the tens and write the total in the tens column. Combine the ones and write the total in the ones column. The child uses his 12 x 18 chart to lay out 35, then 23. See sample worksheets from Addition Facts in Five Minutes a Day.
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