Lesson 1 of 19
More than one whole
Show on a big screenCut strips into quarters. Put 12 pieces in a row. Shade 9 of them. That is two whole strips and one quarter more.
Step 1 of 4
- 12 quarter-pieces in a row.
- Shade 9 of them: 9/4.
- Ring 2 whole strips, then the 1 left over.
- 9/4 and 2 1/4 name the same amount.
Two names, one amount
9/4 has a top number bigger than its bottom. That makes it an improper fraction. Improper means a whole or more.
2 1/4 is a whole number next to a fraction. That is a mixed number. Read it as two and one quarter.
| From | To | How |
|---|---|---|
| 2 1/4 | 9/4 | 2 × 4 = 8, then 8 + 1 = 9 |
| 9/4 | 2 1/4 | Share 9 into fours: 2 left over 1 |
Slide the shaded parts in the lab. Both names show the same count.
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Try the lab to finish this lesson.