Search Header Logo
  1. Resource Library
  2. Math
  3. Geometry
  4. Scaled Copies
  5. M7u1l1 What Are Scaled Copies?
M7U1L1 What are Scaled Copies?

M7U1L1 What are Scaled Copies?

Assessment

Presentation

Mathematics

7th Grade

Hard

CCSS
8.G.A.3, 3.OA.A.4, 7.G.A.1

+8

Standards-aligned

Created by

Eric Henderson

FREE Resource

28 Slides • 10 Questions

1

media

2

​Warmup & Engagement

  1. Go to Clever

  2. ​Complete Xtramath

  3. Go to Clever

  4. ​Complete Khan Academy assignment: Explore scale copies video and practice

media

3

​Complete Khan Academy Questions

  1. ​Go to Clever

  2. ​Go to Khan Academy

  3. ​Complete Explore scale copies

media

4

media

5

media

6

7

Vocabulary

scaled copy

A scaled copy is a copy of an figure where every length in the original figure is multiplied by the same number or scale factor.

For example, triangle DEF is a scaled copy of triangle ABC. Each side length on ABC triangle was multiplied by 1.5 to get the corresponding side length on triangle DEF.

media

8

media

9

media

10

Look at Portraits A–E. How is each one the same as or different from the original portrait of the student?

Get Portraits link from google classroom:

https://access.openupresources.org/curricula/our6-8math/en/supporting-material/7751/index.html

media

11

Open Ended

Question image

Some of the sliders make scaled copies of the original portrait. Which of the Portraits A–E do you think are scaled copies? Explain your reasoning.

12

Open Ended

Question image

Some of the sliders make scaled copies of the original portrait. Which of the Portraits A–E do you think are scaled copies? Explain your reasoning.

13

Multiple Choice

Some of the sliders make scaled copies of the original portrait. Which of the Portraits A–E do you think are scaled copies? Explain your reasoning.

1

a

2

b

3

c

4

d

14

media

15

media

16

media

17

media

18

media

19

media

20

media

21

media

22

media

23

media

24

media

25

media

26

media

27

media

28

media

29

media

30

media

31

media

32

Multiple Choice

Question image

Tyler says that Figure B is a scaled copy of Figure A because all of the peaks are half as tall.

Do you agree with Tyler?  Explain your reasoning.

1

Yes

2

No

33

Multiple Select

Question image

Here is a figure that looks like the letter A, along with several other figures. Which figures are scaled copies of the original A? Explain how you know.

1

1

2

2

3

3

4

4

34

Multiple Select

Question image

On top is a picture of the Rose Bowl Stadium in Pasadena, CA.  Here are some copies of the picture. Select all the pictures that are scaled copies of the original picture.

1

A

2

B

3

C

4

D

35

Fill in the Blank

Complete each equation with a number that makes it true.

5 * ___ = 15

36

Fill in the Blank

Complete each equation with a number that makes it true.

4 * ___ = 32

37

Fill in the Blank

Complete each equation with a number that makes it true.

6 * ___ = 9

38

Fill in the Blank

Complete each equation with a number that makes it true.

12 * ___ = 3

media

Show answer

Auto Play

Slide 1 / 38

SLIDE