Reflection: Developing a Conceptual Understanding Seeing Ten - Section 2: Now You See It, Now You Don't


As a teacher, I don't wait for this unit to introduce the compliments of 10 concept.  All year long I have been exposing them to the idea of complements of 10 and using homework games, Morning Meeting, and using time at the end of lessons to expose the students to this concept.

I use ten frame playing cards with games like Go Fish (Making 10's), I play lots of dice games that have students making combinations of 10, and other games that focus on this concept.  These games can be played quickly and are all about repetition.

If I waited to introduce it until this unit (February time frame), it would be took late and many would not only fail to master 10's but would also fail to progress with complements of 20.  

  Laying the Foundation All Year Long
  Developing a Conceptual Understanding: Laying the Foundation All Year Long
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Seeing Ten

Unit 11: The Number 10 and the Addition and Subtraction Concept
Lesson 4 of 17

Objective: SWBAT will use a strategy to count and combine groups of 10. SWBAT engage in activities that will promote fluency with complements of 10.

Big Idea: Now You See, Now You Don't! Can you visualize 10? Today your students will let you know if they can or can't.

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Math, 1st Grade, fact fluency, complements fo 10 & 20
  65 minutes
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