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.
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.