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Use this introductory lesson on comparison to provide students with practice identifying groups of more and less.

How do you build spatial reasoning, critical thinking, and problem solving skills while doing something that is fun? With tangrams! In honor of Chinese New Year, this lesson introduces your students to the Chinese puzzle of tangrams.

Make multiplying by powers of ten more accessible to your students by focusing on patterns in the number of zeros!

Number facts are related, just like families! Help students learn all about fact families while they make fact family trees!