Oct 31 2012
Counting by 10
This week in our math journals, we have been working to take a big jump of 10 from a single digit number using a hundreds chart. On Monday, I presented students with a journal problem and gave them little instruction. They utilized strategies that we have practiced before, like drawing pictures and using bead strings, but nobody utilized the hundreds charts that were laying out. While students were able to come to the correct answer, their strategies were not efficient.
On Tuesday, we explored the chart together looking at patterns that we noticed. One student brought up the tens place being the same if you look down the column, so we investigated further and realized this happens because each number in a column is ten apart! This knowledge allowed students to solve their journal problem much fast because they took a big jump of ten using the chart.
Tomorrow, we will begin to explore the number line as another math tool to use when solving problems.
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