Lesson plan

Identify numbers as rational or irrational by sorting them into groups based on their properties

teaches Common Core State Standards CCSS.Math.Content.8.NS.A.1 http://corestandards.org/Math/Content/8/NS/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3
teaches Common Core State Standards CCSS.Math.Practice.MP8 http://corestandards.org/Math/Practice/MP8

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Big Ideas: Numbers that can be written as fractions are called rational numbers. Numbers that are not rational are called irrational and therefore cannot be written as fractions. Students will identify rational and irrational numbers. They will find the critical attributes of each and be able to distinguish between them by inspection. Vocabulary: rational number, irrational number Special Materials: Cards for sorting activity Recording sheet