Lesson Plan

Solving Problems by Finding Equivalent Ratios

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Combine total quantities and equivalent ratios in problem solving. The fifth lesson in a series of 29 presents problems that can be solved using equivalent ratios. Pupils use part-to-part ratios and either sums or differences of the quantities to solve contextual problems.

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CCSS: Designed
Additional Tags
Instructional Ideas
  • For struggling learners, require they construct tape diagrams for each of the problems
  • Lead a mini-lesson on creating tape diagrams to show sums and differences
Classroom Considerations
  • The class should understand part-to-part ratios
Pros
  • The answer key for the examples shows the diagrams that represent the problems
  • Encourages the teacher to build the lesson into a discussion as opposed to a lecture
Cons
  • None
Common Core