Math 7 · Unit 4, Lesson 6
Equivalent Expressions
The same story told two ways
ElleMath-speak
In this lesson, we use equivalent expressions to reveal relationships in real situations, and we interpret what each part of an expression means.
FinnPlain English
Two expressions can tell the same story in different ways. Sometimes the longer way tells you more.
Write it down. Do every change on paper, one line per step. Changing signs in your head is the number one reason for missed problems. If you changed something, it should be on the paper.
Go in order. Each tile has a short explanation, then a "Let me try a few" button.
1Same Value, Every TimeHow to tell if two expressions are equivalentStart here
2What the Parts MeanCoefficients, constants, and the story
3Pictures and StoriesRewrite it to see something new
4Unit 4 ReviewOne problem from every lesson
When you have finished
At the end of each tile you will find a review form to give us feedback.
NC standards: NC.7.EE.2, NC.7.EE.1.