Reflection: Grappling with Complexity Keep On Doing! - Section 3: What's the Plan


I notice some students had a hard time explaining how they solve their problems.  So, in this activity I want students to be able to develop a deeper understanding of how one concept is used to help them solve another.  As students worked their way through word problems, they didn't realize they were using skills they already knew.  Yet they were not quite able to apply these familiar in a higher level of complexity.  Therefore, I wanted to create additional time for them to work their way through each problem in an open group discussion. 

As students work I ask, what do you recall? Do you remember how you did that? Can this skill be used to solve another math situation? If so, How?  I am checking to see if they are making connections, and having them explain is creating an open window for other students to offer up alternative corrective representations. For instance, as students explained, other students asked questions about concepts they struggled with (e.g. I did not line my numbers up correctly, or I added wrong) Best of all students were constantly solving problems, reasoning, representing, and communicating with numbers and mathematical concepts.  I continued this process until students can identify the repeated patterns being used, and offer up a mathematical explanation of how they solve their answer.

  What I notice!
  Grappling with Complexity: What I notice!
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Keep On Doing!

Unit 1: Numbers & Operation in Base Ten Grade 2
Lesson 6 of 10

Objective: Students will be able to add up to four two-digit numbers using strategies based on place value and properties of operations.

Big Idea: In this lesson, students will explore how the use of base tens, and place value can be used to help them explain and solve addition word problems.

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25 teachers like this lesson
Math, Number Sense and Operations, addition, justify, explain, word problem
  40 minutes
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