Unit 12 Contents

Use the scale map of Sara's desk and your ruler to answer the following questions.

1. Where is Mr. Origin on the map?
2. Why does Mr. Origin look like a rectangle on the map?
1. What distance on the map does each centimeter represent in the real world?
2. Explain how you know.
3. How many centimeters from left to right is Sara's desk on the map? How long is this in the real world?
4. How many centimeters from back to front is Sara's desk on the map? How long is this in the real world?
1. How long is Sara's pencil on the map? Explain how you found your answer.
2. How long is Sara's pencil in the real world? Show or tell how you know.
3. Measure one of your own pencils. How can this measurement help you decide if your answer is reasonable?
4. About how far is it from the pencil to the top edge of the book on Sara's real desk? Explain how you found your answer.
5. Look at the ruler on the map of Sara's desk. How long is the ruler on the map? Show or tell how you solved this problem.