Please excuse the glare on these pictures, I was using my phone :)
The first thing I had them do was to give everyone a whole and have them show me different ways to break that whole into parts. We used 2 color counters to show different parts. (Somehow I didn't manage to get a picture of this step)
After they were comfortable with that, I gave everyone dice and we started rolling to make parts and wholes. First I had them roll 2 dice to be the parts, and add them together to get their whole. Then they wrote a corresponding number sentence on the number bond.
Next I had them pick a whole, roll 1 dice to make 1 part, and use counters or count on to find the other part. This was a little more tricky, but these guys had such a great sense of numbers and comfort using number bonds from their Kindergarten classes that they breezed right through!
I love these mats because they tie in the different parts, number bonds, and related facts in one fell swoop.
We are getting ready to start adding 3 numbers later this week and I'm going to pull out these mats. (You can read about how we used them last year in this post)