Reflection: Developing a Conceptual Understanding Counting By 2s - Section 3: How Many Eyes?


Before reading through this section, it would be helpful for you to watch this video: A Teachable Moment.

As you can see this student had an appropriate approach of drawing a picture. What she is missing is the understanding of the 2:1 relationship and wasn't clear that there were 7 students not 7 eyes. The video is a great example of why you need to touch base with each student (as they work) and make sure that they are truly understanding what is being asked of them.

  Developing a Conceptual Understanding: Working Through A Misconception
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Counting By 2s

Unit 14: Counting by Groups
Lesson 1 of 8

Objective: SWBAT count and find the total of items that come in groups of two. SWBAT rote count by 2. SWBAT record their thinking.

Big Idea: Eyes, shoulders, knees, hands, and feet are the many things that come in twos. Today your students will learn to count groups of eyes as they find the total number of eyes for a given number of students.

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Math, Number Sense and Operations, 1st Grade, counting by 2s, repeated addition
  75 minutes
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