Because of the importance of ten in our number system, knowing the combinations of ten is a critical skill for our young math learners.
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I’ve been spending time in a great book that was recommended to me, Common Core: Math in Action, K-2, and I found a nifty little activity for the combinations of ten that gets kiddos kinesthetically involved and includes a literature link. The activity uses the book Ten Flashing Fireflies. Ten fireflies are shining in the night sky, and one by one they are caught and put in the jar. For the mini-lesson, you have students act out the story: nine fireflies in the sky and one in the jar–nine and one make ten. I made a little booklet that students can make after acting out the story to record their combinations for ten. You’ll need to copy it duplex for the pages to line up correctly.
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