1. Addition and Subtraction in
Grade 1/2

2. Kids are amazing mathematicians

3. As a parent I would want
to know…
• What is my child doing in maths?
• What can I do to help at home?

4. Where do teachers start?
• Teach the Children, not the curriculum
• Find out what the children know and
move them on
• Maths is not linear, we draw on all kinds
of connections
• We present the same ideas in different
ways using different materials

5. Investigations: Engaging and open-ended with
multiple entry and exit points
How long is 1000 unifix?

6. How long are 100 loom bands?

7. Investigations
Practising:
Counting by ones, fives or tens
Place value, as in 1 of these is 10 of those
Addition and then subtraction
Repeated addition and multiplication
Strategies:
Estimating
Working it out
Checking your answer
Finding a good problem
Reflection:
Today I used…
Something tricky for me was…
I discovered…

8. How do you tell someone they are wrong without
discouraging them?
“That is not the answer we
are looking for”

9. Skills workshops
• Open ended or closed activities with mixed or like
ability groups
• We look at counting, place value, addition and
subtraction, multiplication and division

10. Counting
• Counting on from zero by 2, 5 or 10
• Counting on from any number by 2, 5 or 10
• Odd and even number patterns

11. Place value
• Make, name and record 10
• Understanding 100
• Understanding 1000s

12. Addition Strategies
• Count on from larger
8 + 3 = 11
• Doubles and near doubles
5 + 5 = 10, 5 + 6 = 10 and 1 more
• Make to ten
11 + 9 = 10 + 10
• Number facts
6 + 4= 10
• Odd and even numbers

13. Subtraction
• Count back from larger
• Halving or near halves
• Number facts/fact families

14. Multiplication/Division
• Children progress from repeated addition to
multiplicative thinking and then recall of
multiplication facts

15. What can I do at home?
Ask :
• “What do you think the answer could be?”
• “That’s not the answer we are looking for.”
• “How did you do that?”
• “What was tricky for you?”