It’s a Terrific Tuesday for Learning Math! 

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# It’s a Terrific Tuesday for Learning Math!  - PowerPoint PPT Presentation

It’s a Terrific Tuesday for Learning Math! . Take out your homework: ACE 1 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 &amp; Tum

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### It’s a Terrific Tuesday for Learning Math! 

Take out your homework: ACE 1

DEAR!!!!!!!

• 54) -4
• 55) 9
• 56) -9
• 57) -254
• 58) 8
• 59) -16
• 60) -520
• 61) 3
• 62) D. x=35
• 63) A. 20

Family members: Glum & Tum

Imposters: Sum & Crum

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 …

You Need:

Calculator

2.1 Lab sheet from

2.1 Grid Sheet yesterday

BIG IDEA:

Drawing and Identifying Similar Figures

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)

Let’s look back at yesterday’s lab sheet on the back of your homework…
• 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.
Are Lug and Glug related?
• NO!
• Lug is WIDE and SHORT
• Glug is NARROW and TALL
How do the corresponding angles of the 5 characters compare?
• 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!!

► 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