1. Take out your homework: ACE 1 2. DEAR!!!!!!!. 54) -4 55) 9 56) -9 57) -254 58) 8 59) -16 ...
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It’s a Terrific Tuesday for Learning Math! 1. Take out your homework: ACE 1 2. DEAR!!!!!!!
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Transcript of 1. Take out your homework: ACE 1 2. DEAR!!!!!!!. 54) -4 55) 9 56) -9 57) -254 58) 8 59) -16 ...
It’s a Terrific Tuesday for Learning Math! 1. Take out your homework: ACE 1
2. DEAR!!!!!!!
Warm Up Answers p.81 (54-63) 54) -4 55) 9 56) -9 57) -254 58) 8 59) -16 60) -520 61) 3 62) D. x=35 63) A. 20
Homework check
Homework check, cont…
Family members: Glum & Tum Imposters: Sum & Crum
Glum Tum1.5 times as wide 4 times as wide1.5 times as tall 4 times as tall1.5 times the perimeter
4 times the perimeter
2.25 times the area1.5 x 1.5 = 2.25
16 times the area4 x 4 = 16
Angle measures are the same!
Sum Crum3 times as wide 2 times as wide2 times as long 1 time as tall
(same!)Mouth is 12 units wide and 2 units high
Mouth is 2 times longer than Mug and the same height as Mug
Nose is 6 units wide and 2 units high
Nose is 2 times longer than Mug and the same height as Mug
Yes, the findings support the prediction that the impostors will be Sum and Crum!
Impostors are those who have different scale factors applied to the x and y coordinates.
In other words…rules that the x & y are multiplied by the same number make family members!
2 questions before we move on… Can you describe to your neighbor
what scale factor means? the # you multiply the lengths of an
original figure by to stretch or shrink it
What might be some examples in the real world where scale factors might be used?
Movie screens, logos, billboards, blue prints, photographs, copied images, clip art …
Make sure your notebook cover sheet looks like this:
#. Date Brief Description 1. 10-3 S&S Problem 2.1 day 1/ ACE
(1 a-e) 2. 10-4 S&S Problem 2.1 day 2/ ACE
(14-15)You Need: Calculator 2.1 Lab sheet from 2.1 Grid Sheet yesterday
BIG IDEA:Drawing and Identifying Similar Figures
How would you describe to a friend the growth of the figures that you drew?
They all increased in size…taller…or wider…or both!
Which members seem to belong to the Wump family? And which do NOT?
Mug, Zug and Bug have the same shape but Lug and Glug are distorted.
Let’s look back at yesterday’s lab sheet on the back of your homework…
NO! Lug is WIDE and SHORT Glug is NARROW and TALL
Are Lug and Glug related?
Family members (Mug, Zug, and Bug) have the SAME
angle measures!
The others (Lug and Glug) do NOT have the same angle measures…EXCEPT for the right angles, of course!!
How do the corresponding angles of the 5 characters compare?
Now, let’s look at the corresponding lengths of the characters…
► leg heights 1, 2, 3► nose widths 2, 4, 6► mouth widths 4, 8, 12
Did you notice any patterns?
Make sure your notebook cover sheet looks like this:
#. Date Brief Description 1. 10-3 S&S Problem 2.1 day 1/ ACE (1 a-
e) 2. 10-4 S&S Problem 2.1 day 2/ ACE (14-
15)
Homework is on page 33 in Stretching and Shrinking
