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Marble Jar

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Can you guess how many marbles are in the jar? Thrill with this fun and brightly coloured interactive estimating activity with rolling marbles that can be dragged and dropped into a container. Develop students’ skills in estimation, subtizing, counting, adding, subtracting, and a possible infinite number of other concepts with this flexible virtual manipulative specially designed for the elementary classroom.


Visit classplayground.com for more information about Estimation and Printables and Worksheets.

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