## Reflection: Developing a Conceptual Understanding Adding and Subtracting Decimals - Section 4: Estimating

For this section, I created power point slides with addition and subtraction problems.  I showed a slide for about 7 seconds and had students write down their estimate.  At first, students complained that it wasn’t enough time but I told students that the point was to make an estimate, not solve the problem.  I emphasized that students could not write down the problem, only their estimate.  Then I would put the packet under the document camera and have students share out their estimates.  Students had different estimations, some more exact than others.  I wanted students to hear different options and strategies.

Developing a Conceptual Understanding: Estimating Reflection

# Adding and Subtracting Decimals

Unit 2: The College Project - Working with Decimals
Lesson 3 of 16

## Big Idea: How do you add and subtract decimals? Students use estimates and work on strategies for adding and subtracting decimals.

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Standards:
Subject(s):
Math, Number Sense and Operations, Decimals, 6th grade, master teacher project, adding decimals, subtracting decimals
58 minutes

### Andrea Palmer

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