Standard practice
Paired ticks mark the same number of jumps.
| cups of juice | students |
|---|---|
| 2 | 6 |
| 6 | ? |
Jonah uses 2 cups of juice for every 6 students at the snack table. The same relationship has to hold for a larger amount.
On a double number line, equal jumps land on paired values. The jump size on the bottom is the base ratio’s second part times the same number of jumps as the top. Lining up unequal jumps makes pairs that are not equivalent.
Problem 1 of 9. Activate, study a model, try guided items, work independently, apply, and reflect.