Unit 5, Lesson 7
Metros y centímetros
Grado 4
Preparation
Lesson Narrative
In earlier grades, students measured and estimated lengths in centimeters and in meters to develop a sense of each. They learned that there are 100 centimeters in 1 meter. This lesson helps students see the relationship between centimeters and meters in terms of multiplicative comparison (MP7). Building on their work in previous lessons, students recognize 1 meter as being 100 times as long as 1 centimeter. They use this understanding to convert measurements in meters to centimeters.
- Representation
- MLR8
- Describe (orally and in writing) a meter as 100 times the length of a centimeter.
- Determine a measurement in centimeters that is equivalent to a measurement in meters.
- Exploremos longitudes en metros y en centímetros.
Required Preparation
None
Teacher Reflection Questions
What evidence do you have that students are thinking conceptually about “100 times as many” and not simply adding zeros to the end of a number, without reasoning?