Lesson plan

Compare temperatures by using a vertical number line diagram

teaches Common Core State Standards CCSS.Math.Content.6.NS.C.5 http://corestandards.org/Math/Content/6/NS/C/5
teaches Common Core State Standards CCSS.Math.Content.6.NS.C.6c http://corestandards.org/Math/Content/6/NS/C/6/c
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3

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Big Ideas: The number line can be extended to include negative points. This lesson builds on students work with extending the number line to include rational numbers and negative numbers. The task is to try to win at Temperature War!, a card game for 2 to 6 players. Students are dealt a hand of cards bearing temperatures; they must then evaluate their cards to decide which one they should play to meet a given condition (coldest, warmest, closest to 0 etc.). By consulting a vertical number line, students justify their determinations of which card wins the hand. The mathematical concepts in this lesson build toward students' future work with inequalities, ordering of rational numbers, and absolute value in grade 6. Vocabulary: negative, positive, vertical, Fahrenheit Special Materials: Student teams of 2-6 players. 1 set of Conditions cards per team. 1 set of Temperature cards per team. 1 number line page per team.