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
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Adding and Subtracting Decimals

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

Objective: SWBAT: • Read and write decimals to the thousandths • Compare decimals • Add and subtract decimals

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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28 teachers like this lesson
Math, Number Sense and Operations, Decimals, 6th grade, master teacher project, adding decimals, subtracting decimals
  58 minutes
unit 2 2 image
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