Count by 3's
In this counting by 3's instructional activity, students solve 12 problems in which a series of numbers is analyzed. Students count by 3's and fill in the missing numbers in the series.
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Study Buddies Skip-Counting Patterns
Two Study Buddies worksheets can be found through this link. In the first, math minors count flowers by 1s, and then again by 2s. They answer a few related questions. In the second, they are instructed to work with a partner and clap out...
1st - 3rd Math CCSS: Adaptable