Lesson plan

3. Compare fractions to solve real-world problems (A)

teaches Common Core State Standards CCSS.Math.Content.4.NF.A.1 http://corestandards.org/Math/Content/4/NF/A/1
teaches Common Core State Standards CCSS.Math.Content.4.NF.A.2 http://corestandards.org/Math/Content/4/NF/A/2
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
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Lesson objective: Apply comparing and ordering fractions in a real-world problem context.

This lesson provides an opportunity for students to apply their knowledge and understanding of comparing and ordering fractions to a real-life situation. Students are asked to find the missing ingredients from given clues.

Key Concept students will use: 

  • There are three possible relationships between two given numbers with the same unit of reference, a and b: a>b, a<b, or a=b.

Skills students will use:

  • understand fractions as numbers (Grade 3, Unit 4)
  • recognize equivalent fractions (Grade 3, Unit 10)
  • compare fractions (Grade 3, Unit 11 and Grade 4, Unit 5)

Students engage in Mathematical Practice 4 (model with mathematics) as they create models to reason about the size of fractions and order the numbers.

Key vocabulary: 

  • denominator
  • equivalent
  • equal to
  • greater than
  • less than
  • numerator