Reflection: Real World Applications How Much More Can I Spend? - Section 3: Try It On Your Own


The students loved using the book order forms for this lesson.  One other consideration for this lesson was to use  grocery store ads, but those are becoming harder to acquire in a classroom as newspaper subscriptions decline in my area.  The book order forms were easy to collect because they are delivered right to the school. 

One challenge was actually reading the retail price on the book order because it is written with a strikethrough line.  Additionally, some books did not have a retail price.  

The activity can be modified to meet your needs and student ability by increasing or reducing the amount of money to begin the lesson.  I chose $130, but it can be changed on the chart as needed.

Because of the student interest in this lesson, I will probably repeat this lesson because so many students used the algorithm rather than a strategy.  They are relying on a process without a complete understanding of how the numbers are changing through subtraction.  

  Real World Experience
  Real World Applications: Real World Experience
Loading resource...

How Much More Can I Spend?

Unit 2: Subtraction
Lesson 3 of 5

Objective: SWBAT apply estimation and subtraction in a real-world setting, by keeping a running balance of an amount of money.

Big Idea: Students practice their mental math subtraction strategies using book orders and recording on a balance sheet.

  Print Lesson
2 teachers like this lesson
450px polish sci fi fantasy books
Similar Lessons
Mental Math with Place Value
3rd Grade Math » Place Value
Big Idea: It is imperative that students have a strong understanding of place value in order to complete and communicate any given math task. This lesson invites them to re-explore strategies they have created prior to teaching standard algorithms.
Troy, MI
Environment: Suburban
Michelle Marcus
Initial Informal Assessments
3rd Grade Math » 1st Week: Getting to Know Each Other Through Graphs
Big Idea: Get to know your students' learning personalities as you observe them on this informal assessment.
Tucson, AZ
Environment: Urban
Jennifer Valentine
Multi-Digit Subtraction
5th Grade Math » Targeted Skills Interventions
Big Idea: Beg, borrow, steal? I think borrowing is best!
Grand Rapids, MI
Environment: Urban
Erin Doughty
Something went wrong. See details for more info
Nothing to upload