Unit 3, Lesson 16
Redondeemos y redondeemos otra vez
Grado 3
Preparation
Lesson Purpose
The purpose of this lesson is for students to use their understanding of rounding to consider all the numbers that round to a given number.
Lesson Narrative
Students deepen their understanding of rounding to go beyond accurately rounding individual numbers as they think about what numbers round to a given number. Working backward from a multiple of 10 or a multiple of 100 allows students to think about the relative distances of numbers and the range of numbers that round to the given multiple of 10 or a multiple of 100. Students then use this understanding to write clues to help their classmates guess a mystery number. The rounded number becomes a useful way to describe the mystery number in this game.
- Action and Expression
- MLR8
- Describe (orally) a three-digit number including details based on rounding to the nearest ten or hundred.
- Determine (in writing) all the numbers that can round to a given multiple of 10 or multiple of 100, and describe (orally) observed patterns.
Busquemos patrones al redondear.
Required Materials
Activity 2
Required Preparation
Activity 2
- Each student needs an index card.
Teacher Reflection Questions
What was the best question you asked students today? Why would you consider it the best question, based on what students said or did?
Have a correction or suggestion?
Tell us about a typo, a broken link, or an improvement you’d like to see. We read every submission but can’t reply.
Have a question or need support instead? Visit our Contact Us page to reach our team.