this is WHY?

Today was an amazing moment in math... several kids were practicing their adding strategy of breaking to 10 and adding the ones. I accidentally gave them something that would make the ones make a new group of 10 and they handled it beautifully because the strategy was internal. So, we took it a little further and this is what we got... Drew and a few others were able to use what they know and solve something bigger. After cleaning up math tubs, Drew showed the class his thinking on the big board. WAY TO GO CLASS! It makes this teacher heart extra full!