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Big Ideas:
The properties of real numbers (commutative, associative, and distributive) can be used to rewrite expressions in ways that simplify or shed light on an expression.
Using place value and powers of ten numbers with many digits can be rewritten in a way that makes them easier to use.
This lesson builds on students' understanding of place value, powers of ten, and properties of exponents. This task looks at a girl playing a memory game matching equivalent expressions. Students are presented with 3 cards she has drawn and asked to find the cards that have equivalent expressions or determine if the equivalent expression is on a card that hasn't been flipped. By matching numbers written in scientific notation and standard form, students reason about how place value and powers of ten relate to writing numbers in scientific notation. The mathematical concepts in this lesson build towards students' work with operating with numbers in scientific notation.
Vocabulary: powers of ten, scientific notation