In this finding the missing numbers instructional activity, students use the total amount plus one addend to find the missing addend. Students solve 10 problems.
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Using Variables in Simple Equations
A Cyberchase clip shows Hacker creating a game show that uses a variable to find out how much power is produced by a gleamer bug. Follow the video with a lesson about using variables to solve equations. Terrific handouts and assessments...
4th - 7th Math CCSS: Adaptable