I was reviewing rounding with my students the other day when I had this idea for remediation that worked with several of my struggling students. I gave them each a 100s chart that I modified to look like this:
We practiced rounding to the nearest 10 with the chart like this. Then I added zeros to one of the rows like this:
I know this lesson was successful, because one of the students was able to explain this method to another student coming back from Learning Support.
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