Make Math Moments Academy › Forums › MiniCourse Reflections › The Concept Holding Your Students Back › Lesson 43: Relating Addition and Subtraction – Discussion › Reply To: Lesson 43: Relating Addition and Subtraction – Discussion

I have always talked about solving problems is like having a scale however I never usually bring out the visual aspect of it. Basically, I use my hands to as the scale, I can’t believe I never thought to create a visual for solving equations using a scale. From learning class one can see that after using the scale visual to solve such problems, then one can bring in the number line to show how it works.
Problem that I would use when comparing two people’s earnings. I would be essentially introducing students to systems of equations. Tim makes $15 an hour and Kate earns $12 but got $100 bonus. How long until they earn the same amount?
As you stated numerous time – if bring it math models it really helps you with your thinking.