lesson
Pairs with nothing left
Read with an adult. You can say, point, draw or write your answer.
1 · Learn
An even number can be split into pairs with nothing left over. An odd number has one left over.
Numbers ending in 0, 2, 4, 6 or 8 are even. Numbers ending in 1, 3, 5, 7 or 9 are odd. A number's size alone does not tell you which it is.
2 · Worked example
I pair 14 counters into seven pairs. None are left, so 14 is even.
3 · Your turn
Which are even: 17, 20, 26, 31?
Check your answer
20 and 26 are even. Their ones digits are 0 and 6.
4 · Apply your learning
Make pairs with several quantities and compare the last digits with the pairing result.
Adult guidance and safety
Use practical objects before symbols. Read the task aloud when needed and ask the child to explain, not just name an answer. Revisit with different examples; one successful answer is not proof of fluency.
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