For some reason my daughter is happy doubling her numbers but freezes up if I ask her what half of a number is. She seems to have missed the link between the two so I wanted to do and activity with her to help re-enforce it.
She loves butterflies and knows that the butterflies two wings match so I thought it would be a good idea to use this concept. I downloaded this butterfly template from Activity Village (part of their membership pages). I asked her to pick a number, she started with 7. I got her to write 7 on the top of the first wing and then make 7 dots below it. Then I reminded her that the two wings needed to be the same so she wrote the 7 and drew the 7 dots on the other wing. Then I asked her what the 7+7 would make and she wrote the 14 on the body of the butterfly
And she naturally answered that half of 14 would be 7.
We continued trying this with a few other numbers
Of course little brother joined in. He practiced writing some of his numbers on a couple of the butterflies. We have not done lots of writing with him so I was blown away at how well he is forming his numbers.
It was a really simple activity using the Butterfly template but one which seemed to help explain the concept. She got that the two halves together double a number and when she folded the butterfly in half it just clicked that doubling and halving were opposites.