## Reflection: Developing a Conceptual Understanding Rounding and Estimation, Day 1 - Section 4: Elevator Speech

When I start to teach this lesson, I always revert to the number line. I'll be honest here - models do not work for me as I tend to think of math very viscerally. I struggle with using models but this one works! Just teaching the 'rules' of rounding isn't enough, because students tend to just fill in holes to fix gaps in their own understanding, but once they see the number line they start to connect.

As for models, if there is one suggested in a lesson that doesn't work for you, find one that does. There are always a 100 different ways to explain things. You might even ask your students to develop their own models. You might even learn something form them...I do!

Challenges
Developing a Conceptual Understanding: Challenges

# Rounding and Estimation, Day 1

Unit 1: Working with Whole Numbers
Lesson 8 of 10

## Big Idea: Rounding and Estimation are quick and easy methods for checking your work!

Print Lesson
7 teachers like this lesson
Standards:
Subject(s):
Math, Number Sense and Operations, Integers, Place Value, rounding, Estimating, estimation, whole numbers
80 minutes

### James Ewing

##### Similar Lessons

###### Show what you know + Equivalency
6th Grade Math » The College Project - Working with Decimals
Big Idea: What do students understand? What gaps do they have in their understanding? How are fractions, decimals, and percents connected?
Favorites(11)
Resources(23)
Somerville, MA
Environment: Urban

###### Place Value Review
5th Grade Math » Operations with Decimals and Whole Numbers
Big Idea: Attention: Value found in starting with Place.
Favorites(90)
Resources(9)
Grand Rapids, MI
Environment: Urban

###### Playing With Place Value - Manipulatives
5th Grade Math » The Value of a Whole Number - Place Value
Big Idea: Seeing is believing - especially in place value.
Favorites(19)
Resources(20)
Scottsdale, AZ
Environment: Urban