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# Finding Symmetry on the Place Value Chart: 4th - 8th grade

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This is a short activity with specific instructions that deals with the misconception that the decimal point is the "center" of the base ten system. The reality is that the decimal point has two functions, one of which is to act as a "pointer" to the ones place, which is the actual divider of the place value chart. This goes a long way towards explaining to your students why there is no "opposite" of the ones place: it is the actual center from which the decimals and whole numbers originate.

This is a brief activity that takes about 30 minutes, and will go a long way to help correct a misconception that your students take with them all through middle school and beyond. It is also a companion to my extensive explanation of what we get wrong when teaching place value and how to correct it: Place Value: I know you're teaching it wrong and here's why....
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3 pages
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Teaching Duration
30 minutes
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