What does math have to do with a sore throat? When you mix water and salt you have a great review of how to represent proportional relationships by an equation or graph. Here the proportions of the mixtures may be different, but the class will learn that the unit rate is the same. Extend the lesson by applying to other common mixtures. 

Concepts

equations, proportions, ratios, two variables

Show More Show Less

Additional Tags

two variables, equations, proportion, ratio, math

Show More Show Less

Pros

• Great lesson that builds on 6th and 7th grade standards
• Easily applies to everyday ingredients 

Cons

• Objective not clear

Common Core

6.EE.C.9 7.RP.A.2.a 7.RP.A.2.c 8.EE.B.5