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Numberblocks –

common core decompose
Numberblocks

Numberblocks – Build concepts of composing, decomposing, adding, subtracting. Unfix Cubes are suggested to go along with this. Can be done with a whiteboard, but the hands on building is important.

One – Learn to count to five using the number one.

Two – Add and subtract 1 to make number 2 bigger or smaller.

Three – Learn all about three including three 3’s is 9.

One, Two, Three – Adding with all three.

Four – Decompose 4 by the terrible twos. Introduces square. Two 4’s is 8.

Five – Decompose 5 to 1 + 4 and 2 + 3. Also 1+1+1+1+1.

Six – 6+1 is 7. 3 + 3 is 6.

Six, Seven, Eight – Dice/die, 6+1, 7+1, twos to build 8.

Nine, Ten – count to 9, 3 threes is 9 like 2 twos is 4 = squares.

Ten – Count to ten and decompose, place value.

Numberblock videos organized by number.