Reflection: Lesson Planning Ways to Make 3- A Lesson on Decomposing - Section 2: Presentation of Lesson


For this lesson students used counting cubes manipulatives to come up with ways to make three.  I randomly handed out three cubes to each student.  However, I found that students tended to make use the colors of the cubes to guide their thinking on how to group them.  For example, if a student had two yellow cubes and a red cube they repeatedly wanted to show me 2 + 1 and had a difficult time developing other possibilities.  In the future I will stick to one color for each student.

  The Color of the Cubes
  Lesson Planning: The Color of the Cubes
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Ways to Make 3- A Lesson on Decomposing

Unit 8: Addition
Lesson 9 of 21

Objective: Students will be able to decompose the number 3.

Big Idea: Students will learn what it means to represent a number in different ways and will begin to explore decomposing numbers.

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4 teachers like this lesson
Math, addition, decomposing numbers, Critical Area
  55 minutes
number 3
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