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6-8 Grade 7 Unit 1 Lesson 8

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K-5 Math •6-8 Math 9-12 Math

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Grade 6 •Grade 7 Grade 8

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Lesson 1 Lesson 2 Lesson 3 Lesson 4 Lesson 5 Lesson 6 Lesson 7 •Lesson 8 Lesson 9 Lesson 10 Lesson 11 Lesson 12 Lesson 13

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Unit 6
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Lesson 1
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Lesson 3
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Lesson 6
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Lesson 8
Lesson 9
Lesson 10
Lesson 11
Lesson 12
Lesson 13

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Curriculum

IM K-5 Math
IM 6-8 Math
IM 9-12 Math

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Unit 1, Lesson 8

Scale Drawings and Maps (Optional)

Grade 7

Practice

Problem 1

Student Task Statement

A whale swims at a constant speed of 4 meters per second. How far does it travel in 40 seconds?
A horse runs at a constant speed of 5 meters per second. How much time does it take for the horse to travel 50 meters?
A goose flies at a constant speed, traveling 201 meters in 15 seconds. What is its speed in meters per second?

to access Practice Problem Solutions.

Problem 2

Lesson 8 Resources

Student Materials Student Materials in Spanish

Student Task Statement

Here is a map that shows parts of Texas and Oklahoma.

The map shows a scale measure that represents 0, 30, and 60 miles.

About how far is it from Amarillo to Oklahoma City? Explain your reasoning.
Driving at a constant speed of 70 miles per hour, will it be possible to make this trip in 3 hours? Explain how you know.

to access Practice Problem Solutions.

Problem 3

Student Task Statement

A map of a park is made with the scale 1 inch to 200 feet.

On the map, the north side of the park is 1 foot long.
1. How long is the north side of the actual park?
2. A person walks along the north side of the park, at a constant speed of 5 feet per second. How long does this take them?
A straight path in the park is 900 feet long.
1. How long is this path on the map?
2. A person skateboards along the path, traveling the entire length of the path in 90 seconds. What is their speed in feet per second?

to access Practice Problem Solutions.

Problem 4

ForLesson 5: The Size of the Scale Factor

Student Task Statement

Here are Polygons P and Q.

If Polygon P is the original figure and Polygon Q is the scaled copy, what is the scale factor? Explain your reasoning.
If Polygon Q is the original figure and Polygon P is the scaled copy, what is the scale factor? Explain your reasoning.

to access Practice Problem Solutions.