kassy4

Addition strategies: 15+..., to 17+...

Subtraction strategies: doubles

Subtraction strategies: think addition

Subtraction strategies: 10 frame

Canadian Provinces and capitals

Addition strategies: making 10

Addition strategies: doubles +1

Subtraction strategies: counting up

Addition strategies: almost neighbours

Subtraction strategies: doubles -1

Subtraction strategies: Zero facts

Addition strategies: 18-20

Addition strategies

Addition

Addition strategies: 11+.., 12+..., etc.

Subtraction strategies: counting back: 1,2,3