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6-8 Grade 7 Unit 7 Lesson 13

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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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Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 •Unit 7 Unit 8 Unit 9

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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 Lesson 14 Lesson 15 Lesson 16 Lesson 17

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Accelerated 7

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Unit 3
Unit 4
Unit 5
Unit 6
Unit 7
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Unit 9

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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 7, Lesson 13

Decomposing Bases for Area

Grade 7

Practice

Problem 1
Student Task Statement
You find a crystal in the shape of a prism. Find the volume of the crystal.

The point is directly underneath point , and the following lengths are known:

From to : 2 mm

From to : 3 mm

From to : 6 mm

From to : 10 mm

From to : 7 mm

From to : 4 mm

Lesson 13 Resources

Student Materials Student Materials in Spanish

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Problem 2

Student Task Statement

This carved wooden jewelry box is from Indonesia. The base of the box is an octagon with each side 4.2 cm long. The box is 9 cm tall. What is the volume of the box?

A photo of a decorative wooden box.

An octagon.

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Problem 3

ForLesson 9: Drawing Triangles (Part 1)

Student Task Statement

A triangle has one side that is 7 cm long and another side that is 3 cm long.

Sketch this triangle and label your sketch with the given measurements. (If you are stuck, try using a compass or cutting some straws to these two lengths.)
Draw one more triangle with these measurements that is not identical to your first triangle.
Explain how you can tell they are not identical.

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Problem 4

ForLesson 4: Solving for Unknown Angles

Student Task Statement

Select all equations that represent a relationship between angles in the figure.

Three points intersect to form 6 lines. Clockwise, the angles measure b degrees, 30 degrees, 90 degrees, a, degrees, c degrees, blank.

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Problem 5

ForLesson 9: Part of a Percent

Student Task Statement

A mixture of punch contains 1 quart of lemonade, 2 cups of grape juice, 4 tablespoons of honey, and gallon of sparkling water. Find the percentage of the punch mixture that comes from each ingredient. Round your answers to the nearest tenth of a percent. (Hint: 1 cup = 16 tablespoons)

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