Lesson plan

Divide whole numbers by decimals to solve real-world problems

teaches Common Core State Standards CCSS.Math.Content.5.MD.A.1 http://corestandards.org/Math/Content/5/MD/A/1
teaches Common Core State Standards CCSS.Math.Content.5.NBT.B.7 http://corestandards.org/Math/Content/5/NBT/B/7
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4
teaches Common Core State Standards CCSS.Math.Practice.MP5 http://corestandards.org/Math/Practice/MP5

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Big Ideas: Multiplication and division are inverse operations. Each place value to the left is ten times greater than the one to the right. Decimal place value is an extension of whole number place value In this task students apply their understanding of whole number operations to decimals. They reason about the relationship between whole numbers and decimals and understand that the quotient is larger than the dividend when dividing by a decimal. This task engages students in a real-world problem where they must decide which distances are best to place stop signs along a road. The mathematical concepts in this lesson help strengthen students' understanding of decimals and place value. Vocabulary: quotient, dividend, missing factor, number line diagram, hundredth, tenth, decimal Special Materials: Base Ten Blocks Decimal grids Rulers (optional) Fraction bars (Optional)