Proportional Flag

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Geometry: Similarity and Proportion

Level

6-8

Activity Time

60 Minutes

TI Calculator

TI-15 Explorer™/TI-10

Other Materials

Toy truck or car with scale indicated
Color tiles
Paper and pencils
Chart paper and markers

Resource Types

Lessons

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Proportional Flag

Activity Overview

Students will use the concepts of similarity to create a scale drawing of the national flag, that is large enough to cover most of a football field.

Before the Activity

See the attached PDF file for detailed instructions for this activity

Print pages 80 - 86 from the attached PDF file for your class

During the Activity

Distribute the pages to the class.

Follow the activity procedures:

Understand that similar figures have proportional dimensions, and figures with proportional dimensions are similar

Analyze and record the dimensions of the flag and the football field

Study and record the length to width ratio of the flag and the field

Enter the ratios as fractions in the calculator

Check if the fractions are in their simplest terms, and if they are equal

Decide whether the flag and the field are similar figures

Draw a scale model of the football field flag

Label the length and width of each section of the flag, including the diameter of one star

After the Activity

Students calculate the amount of fabric that will be needed to create the flag.

Review student results

As a class, look at the diagrams presented and note any similarities and differences

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: Geometry: Similarity and Proportion

Level

6-8

Activity Time

60 Minutes

TI Calculator

TI-15 Explorer™/TI-10

Other Materials

Toy truck or car with scale indicated
Color tiles
Paper and pencils
Chart paper and markers

Resource Types

Lessons

Report an Issue

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Proportional Flag

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