Lesson 2.1.5: Scale factor
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For this lesson there are 12 steps for you to take. Scroll down and do each step one-by-one. The instructions under each step will help clarify exactly what you need to do, so please read all the instructions.
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Here is the Lesson 2.1.5 Worksheet
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1.) Start Notes: Targets
Title your notes and write the targets listed below.
Title your notes and write the targets listed below.
- Given a scale drawing, I can use the scale factor to find missing lengths.
- I can use proportions to find missing lengths.
3.) Video: Warm Up
Watch this video to see what I thought of the Warm Up. |
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5.) Video: Practice 1
Watch this video to see how I worked through Practice 1. I know this video is a bit long, but it spends some good time reviewing to make some connections to previous lessons. Feel free to fast forward through the video if you feel comfortable doing so but make sure you tune in while you do so. |
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7.) Video: Practice 2
Watch this video to see how I worked through Practice 2. |
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9.) Video: Practice 3
Watch this video to see how I worked through Practice 3. |
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11.) Video: Practice 4
Watch this video to see how I worked through Practice 4. |
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12.) Exit Ticket
Both of these exit tickets are similar to problems we have worked through in this lesson. Now it is your turn to do it all on your own to show that you know how to do it. For part 1, draw a triangle that is similar to triangle XYZ into your notes and follow the directions. For part 2, copy the diagram into your notes and find the length of B'C' given the three new scenarios. When you are done, please show me your awesome work. A high five is on its way :) |