Reflection: Developing a Conceptual Understanding Assessment of Unit Concepts: Addition and Subtraction Story Problems - Section 1: Warm Up


As students were engaged with this activity, one student pointed out that they could figure out how many dots there were just by counting the tens or the ones.  He realized that there were ten sticks and connected that to groups of tens and ones to make 100.  I had him present his thinking to the rest of the class before we moved on to the next part of the lesson.

His presentation is the video in the resources of this reflection.

  Developing a Conceptual Understanding: An A-Ha Moment
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Assessment of Unit Concepts: Addition and Subtraction Story Problems

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

Objective: SWBAT solve addition and subtraction story problems. SWBAT identify a strategy used to solve the problem and accurately record their answers.

Big Idea: Students will complete a few tasks that will allow you to assess students' abilities to solve addition and subtraction problems and identify the strategy that each student is using.

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Math, problem solving, 1st Grade Math, fact fluency, counting by 10s
  175 minutes
end of lesson discussion
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