Reflection: Developing a Conceptual Understanding Who Makes Mistakes - Section 1: Warm Up

 

The student problems included both addition and subtraction questions. The first problem was, "I have 8 butterflies and 6 hearts, how many more butterflies do I have?" With the first problem a student asked, "do we add or subtract?" Another raised a hand and wanted to know what the number sentence was. 

I don't want to tell the students what to do but I don't want them to be overwhelmed either. I ask if anyone could use a picture to solve the problem. The question had included the words "how many more.." A child came up and drew the 8 butterflies and the 6 hearts. I asked them if we needed to know how many in all? No, well then what do we want to know? 

Here I am providing support navigating the language, while not providing either the answer or the number sentence. If I had given them 8 - 6, all of the students would be able to solve the problem. If I had given them 8 + 6 they also would have been able to get the answer. Instead I focused on supporting their mathematical reasoning, which is fundamental to all of their problem solving.

  Do We Add or Subtract
  Developing a Conceptual Understanding: Do We Add or Subtract
Loading resource...
 

Who Makes Mistakes

Unit 2: Adding and Subtracting the Basics
Lesson 2 of 18

Objective: SWBAT realize that mistakes in math are a part of the learning process.

Big Idea: Students in upper grades are asked to show their work. Second graders hide that work. This lesson encourages students to share their work, even without the correct answer.

  Print Lesson
100 0551
 
1
2
3
Similar Lessons
 
A Grinchy Christmas
1st Grade Math » Properties of Addition and Subtraction
Big Idea: This Grinch inspired lesson pushes 1st graders to attempt 2 part story problems. It also is a great way to introduce the topic in 2nd grade!
  Favorites(11)
  Resources(14)
New Orleans, LA
Environment: Urban
Amanda Cole
 
The Recipe for a Great Word Problem
2nd Grade Math » Addition and Subtraction Basic Training
Big Idea: The big idea of this lesson is to have students write their own word problems to help them have a better understanding of mathematical operations, as they relate to real world scenarios.
  Favorites(97)
  Resources(14)
Pepperell, MA
Environment: Rural
Kristen O'Connor
 
What's Your Story?
2nd Grade Math » Working With Numbers!
Big Idea: In this lesson, students will solve and explain more difficult story problems. Additionally, students will explain their thinking in written form.
  Favorites(25)
  Resources(21)
Jackson, MS
Environment: Urban
Carol Redfield
Something went wrong. See details for more info
Nothing to upload
details
close