Topics: Number Sense Inversion Additive Composition Unit 2 Topics: Number Sense Inversion Additive Composition

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: Inversion 2

? 7 8 +5 -6

? 6 6 +3 -3

? 8 7 +5 -4

? 8 8 +4 -4

? 5 6 +4 -5

Now, the blocks will be added and subtracted from different ends

? 5 6 +3 -4

? 7 7 +4 -4

? 8 9 +5 -6

? 6 7 +4 -5

? 6 5 +5 -4

IT: Additive Composition 1

3p ?

4p ?

2p 3p

5p

7p

8p

Now it’s time to split into groups for other activities... Well done! Now it’s time to split into groups for other activities...

IT: Additive Composition 2

8p

Jack has Alice has 5p 5p

7p 6p

7p 6p

8p 6p 7p 9p

9p

10p

8p 5p 9p 6p

Mixed 2p and 5p Exercise

How many 5ps or 2ps can you make? Unit 1 Worksheet 1 Page 1 Name: _________ 5p’s 2p’s 1. 2. 3. 4. 5.

How many 5ps or 2ps can you make? Unit 1 Worksheet 1 Page 2 Name: _________ 5p’s 2p’s 6. 7. 8. 9. 10.