Thrift Store Markdowns

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Middle Grades Math: Problem Solving

Math: Middle Grades Math: Number Sense

Math: Middle Grades Math: Algebraic Thinking

Math: PreAlgebra: Number Sense and Operations

Level

6-8

Activity Time

60 Minutes

TI Calculator

TI-15 Explorer™/TI-10

Other Materials

Chart paper
Markers

Resource Types

Lessons

Report an Issue

Thrift Store Markdowns

Activity Overview

Students will calculate a series of discounts using increasing unit fractions.

Before the Activity

See the attached PDF file for detailed instructions for this activity

Print pages 52 - 57 from the attached PDF file for your class

Understand the concept of discount price

During the Activity

Distribute the pages to the class.

Follow the activity procedures:

Use the two different original prices and the fraction marked off to determine the sale price and thus the better buy

Record the beginning price for one piece of the furniture

Find the reduced prices of the piece of furniture using different discount patterns

Calculate the fraction amount and dollar amount of the price reduction each week

Determine the number of weeks before the price is about half of the original price for each of the three discount patterns

Decide on the best discount pattern

Create a chart with the calculations

After the Activity

Students share the charts they created.

Review student results

As a class, discuss the similarities and differences between the charts and the calculation method

Re-teach concepts as necessary

Download Files

Download All Files (ZIP)

Before the Activity Files

Teacher Notes PDF

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Middle Grades Math: Problem Solving

Math: Middle Grades Math: Number Sense

Math: Middle Grades Math: Algebraic Thinking

Math: PreAlgebra: Number Sense and Operations

Level

6-8

Activity Time

60 Minutes

TI Calculator

TI-15 Explorer™/TI-10

Other Materials

Chart paper
Markers

Resource Types

Lessons

Report an Issue

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