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.

  Print 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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