Small-group support
A ratio keeps both quantities in view.
| raisins | peanuts |
|---|---|
| 2 | 5 |
| 4 | ? |
Mateo uses 2 cups of raisins for every 5 cups of peanuts at the school garden. The same relationship has to hold for a larger amount.
Multiplying both parts by the same number does not change how the quantities compare. Adding the same number usually does change the comparison, because the smaller part grows by a larger percent than the larger part.
Problem 1 of 4. A short entry task, a model, guided examples, then a new independent try. Frames are optional.
| raisins | peanuts |
|---|---|
| 2 | 5 |
| 4 | ? |
A ratio table shows 2 raisins for every 5 peanuts. How many peanuts go with 4 raisins?
Support frame: Factor = 4 ÷ 2. Second part = 5 × factor.