Substituting Numbers for Letters

Make Connections

Performance Task

Ways of Thinking: Make Connections

Take notes about your classmates’ approaches to evaluating the expressions they wrote.


As your classmates present, ask questions such as:

  • What cars did you use in your train?
  • How do your two expressions represent your train?
  • What properties did you use to rewrite your expression to combine like terms?
  • Did you get the same answer when you evaluated each of your expressions? If not, what did you do?
  • Which expression was easier to evaluate? Why?
  • What is the length of your train? How do you know?