Ask students to sort the Doubles and Near Doubles Ten Frames Cards into two piles: sums that are even
and sums that are odd.
- Is the double of [5] even or odd?
- How did you decide? (I can make pairs and have
no leftovers.)
- Is the double + 1 of [5] even or odd?
- Is the double − 1 of [5] even or odd?
- What happens when you add two even numbers?
(Possible response: The sum is even.)
- What happens when you add two odd numbers?
(Possible response: The sum is even.)
- What happens when you add an odd number to an
even number? (Possible response: The sum is odd.)
