Place Value
Free lessons and practice worksheets for place value.
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Number Line
Number lines transform abstract numerical concepts into visual roadmaps that students can physically navigate. When teaching CCSS.2.MD.6 and CCSS.3.NF.2, this foundational tool bridges counting skills with fraction understanding, helping students locate values between 0 and 500 with increasing precision.
3 min readTens & Ones
When second-grader Emma counts 43 jellybeans, she needs to understand that the 4 represents 40 jellybeans, not just 4. Place value with tens and ones forms the foundation for all multi-digit arithmetic in elementary mathematics. CCSS.1.NBT.2 and CCSS.2.NBT.1 emphasize building this critical number sense through concrete representations and abstract understanding.
3 min read