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Lesson Plan

Compute products of numbers in scientific notation by using the commutative and Product of Powers properties

teaches Common Core State Standards CCSS.Math.Content.8.EE.A.4 http://corestandards.org/Math/Content/8/EE/A/4
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7
teaches Common Core State Standards CCSS.Math.Practice.MP8 http://corestandards.org/Math/Practice/MP8
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Big Idea: Only the non-zero digits are necessary when computing products of numbers in scientific notation. This lesson builds on students' work with scientific notation, multiplication of decimals and the commutative and Product of Powers properties. This task uses a table of engine emissions and asks students to find the total mass of hydrogen atoms per engine over various times. Students are presented with 4 different engines each with a different lifespan, but each emits the same number of atoms per second and each hydrogen atom has the same mass. Students reason about products of numbers in scientific notation. The mathematical concepts of this lesson build towards students' work with rational expressions.
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