Lesson plan

Find distance between points by using a number line

teaches Common Core State Standards CCSS.Math.Content.6.NS.C.7 http://corestandards.org/Math/Content/6/NS/C/7
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP6 http://corestandards.org/Math/Practice/MP6

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Big Ideas: Distance is always a positive amount. This lesson builds on students' work with extending the number line and finding a number's absolute value. The task uses a vertical number line with a tree above and the ground below the surface of 0. Students are presented with a list of animals that they must locate above or below the surface and then find the distances between. By repeatedly using the number line to calculate a point's distance from 0 and then from other points, students are set up to make connections to absolute value and between finding the distance and finding the difference. The mathematical concepts in this lesson build toward students' future work with finding the distance between points with a common coordinate on the coordinate plane and with adding and subtracting integers in grades 6 and 7. Vocabulary: negative, positive, distance, vertical, absolute value