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Unit Plan
Scholastic

Scholastic: Study Jams! Math: Addition and Subtraction: Estimate Sum, Difference

For Students 3rd - 5th
Complete this step by step lesson to estimate the sum and difference then test yourself.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: Valentine Marbles

For Teachers 6th - 8th Standards
Explore estimation through this lesson plan designed to engage students.