Proportional Reasoning

A little background

  • In case you are trying the MARS MAP Classroom Challenges for the first time, it is recommended that you read the Brief Guide for teachers and administrators before you get started.
  • After a whole-class introduction, students work in small groups, putting diagrams and descriptions of particular mixtures of orange and soda into order of strength.
  • Students then compare their work with their peers.
  • Next, in a whole-class discussion, students comment on and critique some sample student statements in which reasons are given as to why two mixtures would or wouldn't taste the same.
  • Students then have the opportunity to revise their card ordering and correct any misplaced cards.
  • Additional resources for this lesson include: l80_proportional_reasoning_slides_beta ms.ppt

Objectives

  • To help you assess how well students are able to reason proportionally when comparing the relationship between two quantities expressed as unit rates and/or part-to-part ratios.
  • To help you assess how well students are able to describe a ratio relationship between two quantities.
  • To help you assess how well students are able to compare ratios expressed in different ways.
  • To help you assess how well students are able to use proportional reasoning to solve a real-world problem.
90 mins 6.RP.A.3 6.RP.A 6.RP.A.1 6.RP.A.2 K-12.MP.1 K-12.MP.2 K-12.MP.3 6.RP.A.3A 6.RP.A.3B 6.RP.A.3C 6.RP.A.3D
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