## Reflection: Intrinsic Motivation Missing Number Equations - Section 2: Teaching the Lesson

For this lesson I tried to think of a way to engage students in solving equations where the unknown was not always in the final position of the equation. This is important as students work problems that require them to add on or take apart, as is specified in the Common Core. If students can only set equations with the answer in the final position, they will have more trouble taking problems apart to solve them.

I decided to cut out a magnifying glass to place where the missing number was needed. I told students they would be detectives and had to find the mystery number. The idea of working like detectives excited them and kept their attention on the process.

You could make a connection here to literature by reading Nate the Great to the class. Nate is a young boy who is a detective with his dog Sludge. Students can feel like they can be like Nate.

Playing Detective
Intrinsic Motivation: Playing Detective

# Missing Number Equations

Unit 6: Everything in Its Place
Lesson 10 of 14

## Big Idea: Students will become more comfortable making sense of equations presented in missing answer (traditional) and missing number ( nontraditional) formats.

Print Lesson
2 teachers like this lesson
Standards:
Subject(s):
Math, Number Sense and Operations, Money, addition, subtraction, counting
55 minutes

### Beth McKenna

##### Similar Lessons

###### A Grinchy Christmas
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(9)
Resources(14)
New Orleans, LA
Environment: Urban

###### The Recipe for a Great Word Problem
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(74)
Resources(14)
Pepperell, MA
Environment: Rural