Lesson plan

6. Sorting greater than, less than (FP)

teaches Common Core State Standards CCSS.Math.Content.K.CC.C.6 http://corestandards.org/Math/Content/K/CC/C/6
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards CCSS.Math.Practice.MP6 http://corestandards.org/Math/Practice/MP6
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Lesson objective: Compare and sort shape cards to determine whether they show a number of shapes greater than, less than or equal to the target number. 

This lesson helps to build fluency with comparing groups and sets to a specific quantity. Shape cards (with 4-10 tiles) are used here because it supports comparing a a group that is a representation of a quantiy. This work develops students' understanding that we can identify whether groups of objects are greater than or less than the group they are being compared to.

Students engage in Mathematical Practice 2 (Reason abstractly and quantitatively) as they apply their understanding of comparing with concrete objects to sorting shape card ands compare them to a target number to determine if they are less than, equal to or greater than. They also apply Mathematical Practice 6 (Attend to Precision) as they use correct compare language greater than, less than and equal to. Students may rely on counting and matching strategies to support them as they compare shape cards. 

Key vocabulary:

  • compare
  • counting
  • equal, equal to
  • greater, greater than
  • less, less than
  • sort
  • target number

Special materials needed:

  • shape cards (one set per pair or group)  Run off and prepare before class.
  • target mat for each pair (optional) A large piece of paper with compare labels can be used. 
  • Other objects can be sorted and compared to the target number ( dot images, dominoes, ten frame cards). This is also optional.