Activities

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- Before the Activity Files
- Teacher Notes PDF
Alignment
- Standards Alignment
- Textbook Alignment
Subject Area
- Maths: Middle Grades Math: Problem Solving
- Maths: Middle Grades Math: Number Sense
- Maths: Middle Grades Math: Algebraic Thinking
- Maths: PreAlgebra: Number Sense and Operations
Author

Texas Instruments
Level

6-8
Activity Time

60 Minutes
Device
- TI-15 Explorer™
Other Materials
- Chart paper
- Markers
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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

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Before the Activity Files

Alignment

Subject Area

Author

Level

Activity Time

Device

Other Materials