Losing Your Marbles? {Mental Math Game}

Grade Levels
2nd - 7th, Homeschool
Formats Included
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Bring in a large cylindrical glass jar that is filled with marbles of different shapes and sizes.
Also bring in a tiny cylindrical glass jar that is filled with marbles.
Tell the students the amount of marbles that are in the tiny jar.
Their task is to estimate the number of marbles in the large glass jar.

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