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READY … SET … MATH !! . read until we begin. . Reminder…. Today is the last entry for your notebooks ! Be sure you go through your notebook assignment sheets and SELF-ASSESS that you have everything! If you can’t find it, then I can’t find it!

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Ready set math

READY…SET…MATH!!

read until we begin. 


Reminder
Reminder…

  • Today is the last entry for your notebooks! Be sure you go through your notebook assignment sheets and SELF-ASSESS that you have everything!

  • If you can’t find it, then I can’t find it!

  • Highlight the titles of your homework to make it easier to find.

  • Do you have your name, date, ACE #s on everything?


Make sure your notebook assignment sheet looks like this:

  • #. Date Brief Description_________________

  • 1. 10-3 S&S Problem 2.1 day 1/ ACE (1 a-f)

  • 10-4 S&S Problem 2.1 day 2/ ACE (14-15)

  • 10-5 S&S Problem 2.2 ACE 3, 16, 17

  • 10-6 S&S Problem 2.3 ACE 5,6

  • 10-11 S&S Problem 3.1 ACE 1-3, 22-25

  • 10-12 S&S Problem 3.2 ACE 4-6, 26-31

  • 10-13 S&S Problem 3.3 ACE 9-14, 38-41

  • 10-18 S&S Problem 4.1 ACE 1, 2,15-20

BIG IDEA: Similarity and Ratios

Book p. 58 You need: calculator

Lab sheet 4.1


Think about it
Think about it…

  • How do you think this technique produced these variations of the original shape?

  • If we think of these images as we did the Wumps, which ones would be in the same family?

  • How would you know they were in the same family?

  • Are these similar figures?

  • These figures don’t have straight sides like the Wumps did. What can we measure to check for similarity?



What is a ratio
What is a “ratio”?

  • A comparison of two quantities by division

  • Examples…

  • Length to width

  • Cost per ounce

  • Height to weight

  • Can YOU think of more?



What do we do today
What do we do today? girl. The

  • Today, you will find ratios of SHORT SIDE to LONG SIDE for each rectangle.

  • Then you will compare the information that the ratios and the scale factors give about similar figures.


Time to get to work
TIME TO GET TO WORK! girl. The

  • Work with a partner to complete Problem 4.1 using your lab sheet

  • The BACK of your lab sheet is where you will write your answers today!


Ratio A = 3/5 girl. The

Ratio B = 3/5

Ratio C = 3/5

Ratio D = 3/10


Equal Ratios mean similar figures. girl. The

Non-equal ratios

mean that the figures are not similar.




All ratios are equal. scale factor

Similar parallelograms are F & G.

For parallelograms to be similar, the ratios

AND the corresponding angles must be the same.


C. No. The ratios AND the corresponding scale factor

angles must be the same.


Make sure your notebook assignment sheet looks like this: scale factor

  • #. Date Brief Description_________________

  • 1. 10-3 S&S Problem 2.1 day 1/ ACE (1 a-f)

  • 10-4 S&S Problem 2.1 day 2/ ACE (14-15)

  • 10-5 S&S Problem 2.2 ACE 3, 16, 17

  • 10-6 S&S Problem 2.3 ACE 5,6

  • 10-11 S&S Problem 3.1 ACE 1-3, 22-25

  • 10-12 S&S Problem 3.2 ACE 4-6, 26-31

  • 10-13 S&S Problem 3.3 ACE 9-14, 38-41

  • 10-18 S&S Problem 4.1 ACE 1, 15-25


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