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Lesson Plan

3. True or False: Sort equation cards (A)

teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards CCSS.Math.Content.1.OA.D.7 http://corestandards.org/Math/Content/1/OA/D/7
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Lesson objective: Apply knowledge of comparing sides of the equals sign to determine if equations are true or false.

This lesson provides an opportunity for students to apply their knowledge and understanding of true and false equations to a mathematical situation. Students are asked to sort equations as either true or false based on their use of math tools.

Key Concept students will use: 

  • True equations show the same value on each side of the equals sign, while false equations show different values.

Skills students will use:

  • Adding and subtracting skills within 20 (Grade 1, Unit 9, 1.OA.C.6).
  • Understanding that each side of the equals sign in an equation has the same value (Grade 1, Unit 9, 1.OA.D.7).
  • Understanding of what distinguishes a true equation and a false equation.

Students engage in Mathematical Practice #2 (reason abstractly and quantitatively) as they compare the two sides of an equation to determine if the equation is true or false. Before students typically only saw true equations, with one operation. This task will guide students toward flexibly thinking about numbers and operations within equations.

Key vocabulary: 

  • determine
  • equal
  • equals sign
  • equation
  • false
  • model
  • represent
  • sort
  • true
  • value

Special materials needed:

  • counters
  • cubes
  • glue stick
  • scissors
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Interpreting and using symbols in numeric expressions and comparisons

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