Reflection: Problem-based Approaches Keeping It In The Field - Section 1: Warm Up

 

When I put the incorrect problems on the board students started saying things like, "Oh, I get it"; "I know what we are doing"; "She made mistakes and we are going to correct them." They quickly recognized that I had put the equations on the board and that not all of the problems were correct. They were surprised when I asked them to copy the problems and then put a smile or a frown to tell whether the problems made sense or not. 

It was good that most of the class immediately realized that the first answer could not come to 910. With answers that were closer, it was harder for students to decide if my work made sense or not. The class was divided on the last 2 problems. 

When we checked together, students found a variety of strategies to get the exact answer. They were able to compare that answer to the answer I had found. 

I really want students to begin to see this with their own work so this type of exercise is one I will repeat over and over again. At this point in second grade I want students to begin to "proofread" their math, the way they are learning to do in writing.

  AH HA, I Know What You Are Doing
  Problem-based Approaches: AH HA, I Know What You Are Doing
Loading resource...
 

Keeping It In The Field

Unit 11: The Numbers Are Getting Bigger
Lesson 11 of 15

Objective: SWBAT determine the reasonableness of solutions to addition and subtraction problems.

Big Idea: Students know about keeping the ball on the playing field in a sport, what about keeping the numbers in the playing field when solving problems in math?

  Print Lesson
Add this lesson to your favorites
Subject(s):
Math, Number Sense and Operations, estimate (sums and differences), addition, subtraction
  45 minutes
images
 
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(8)
  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(66)
  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(31)
  Resources(21)
Jackson, MS
Environment: Urban
Carol Redfield
 
Something went wrong. See details for more info
Nothing to upload
details
close