Topics: Number Sense Additive Composition Inversion

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Presentation transcript:

Topics: Number Sense Additive Composition Inversion Unit 1 Topics: Number Sense Additive Composition Inversion

IT: The Caterpillar

3 6 19 4 18 16 20 17 2 10 9 13 12 11 14 start 8 7 15 5 1 3 6 19 4 18 16 20 17 2 10 9 13 12 11 14 start 8 7 15 5 1

IT: Ladybird Game

IT: Butterfly 5p Game

How many spots did you fill? Unit 1 Answer sheet 2 Example Coins for each go How many spots did you fill? 2 2

Teacher demonstration of inversion with blocks

IT: Inversion 1

? 6 6 +4 -4

? 4 5 +6 -7

? 9 9 +5 -5

? 9 8 +5 -4

? 6 7 +4 -5

Now, the blocks added and subtracted will no longer be in a different colour

? 7 8 +3 -4

? 7 7 +5 -5

? 10 9 +5 -4

? 7 8 +5 -6

? 3 4 +6 -7

Well done!