Lesson plan

Compare fractions with like denominators by using symbols

teaches Common Core State Standards CCSS.Math.Content.3.NF.A.3d http://corestandards.org/Math/Content/3/NF/A/3/d
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.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: A fraction describes the relationship between the part and the whole. Comparisons with any model can only be made when both fractions are a piece of the same sized whole. Fractions can be compared using , = symbols. This lessons builds on students' work with fractions. This task uses a scenario in which children are raising money by reading books and working on a Science Camp project together. Students are presented with a scenario and must create questions that will challenge classmates to compare fractional amounts. By comparing the numbers of books read in the scenario, students will be required to reason about the size of the fractions and demonstrate their understanding using symbols. In the second portion of the lesson, children are working on a project for Science Camp. Students are asked to compare the fractional amount of work done for the two different students. The mathematical concepts in this lesson build towards students' future work with solving problems that involve comparing fractions by using strategies based on noticing equal denominators. Vocabulary: Number line, fraction, equivalent, numerator, denominator, compare, reason, symbols