A friend recently explained to me how her daughter was showing her thinking for adding on a hundred chart, and I was intrigued. I asked her to send me a picture:
I love how the kids are showing their hundred chart thinking without the actual hundred chart. Notice also that they are apparently required to show their thinking two ways--in this case with an open number line and the partial hundred chart.
I made a little freebie that can be used to practice this type of recording. But as you see in the picture above, a simple word problem and a composition book work wonders!