9/8/25 What are Scaled Copies?

9/8/25
Lesson 1.1.4 - What are Scaled Copies

I will.........

- tell whether or not a figure is a scaled copy of another figure

- describe some characteristics of a scaled copy
-Let's explore scaled copies

Vocabulary: scaled copy

​Resizing Pictures

Suppose you were given a picture and you wanted to change it in some way (make it bigger, smaller, tilted). How would the new picture look? With Geogebra, we can find that out.

Warm Up - Page 2

Video on resizing pictures and a Geogebra activity that allows you to resize pictures.

Open Ended

You saw five portraits labeled A to E in the GeoGebra activity. Pick ONE portrait and describe how it is the same as or different from the original portrait.

​Warm-Up Page 3

Look and see how each of the portraits compare with the original.

​Let's Talk Fun Houses

You go through a fun house and you stand in front of a mirror.......and what you see isn't what you'd expect. The mirrors are curved so the picture looking back at you is different.

1st vocab term - Scaled Copy

A scaled copy is a copy of an image where every length in the original image is multiplied by the same number. 

For example, if a picture is 3 feet long and 2 feet tall, and you multiply the dimensions by 2, now the picture would be 6 feet long and 4 feet tall.

​Drawings 1 and 2 are the same shape as the original, but the sizes are different. (Yes, scaled copies can be smaller than the original; not just larger).

​​Scaled Copies

​Drawings 1 and 2 have different shapes. Drawing 1 is more spread out. Drawing 2 is more narrow.

​​NOT Scaled Copies

Draw

Look at the Original. 3 of these are scaled copies of the original. Circle the 3 scaled copies.

Multiple Select

Which figures are scaled copies of the original A?

Select the two correct answers.

• Figure 1

• Figure 2

• Figure 3

• Figure 4

Edio Page 6 (Explore) for matching activity using Geogebra.

Categorize

Options (3)

Organize these options into the right categories

1 figure is a scaled copy.

2 figures are not scaled copies.

Scaled Copy

Not Scaled Copy

​Check Your Work

Explore Page 4 - Question 1 (about the F's)
Explore Page 5 - Question 2 (about the A's)
Explore Page 7 - Question 3 (matching polygons)

Make sure you click on the submit for review button if you are attending live. If you are watching the recording, you must answer all questions

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​First Edio math lesson is done!