Grouping Discs

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The Maker of the “Grouping Discs” designed a manipulative intended to help students count, add, subtract, and make groups of ten. She explains, “The grouping discs I have created and designed have nine slots in them so that up to nine additional discs can be added to the base disc to make one group of ten. More discs can be inserted into the slots on any of the other discs that are attached to the base disc. By doing so, students can not only add and subtract using direct modeling, they can gain a sense of base ten while also having fun creating their model.” “Grouping Discs” can be a very exciting and expansive manipulative for students as they build grouping and base-ten understandings through dynamic and exploratory interactions with the object.