8th - 3/3
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Items in this lesson
Slide 1 - Slide
Check in!
😒🙁😐🙂😃
Slide 2 - Poll
What are you looking forward to this weekend?
Slide 3 - Open question
Slide 4 - Slide
Skip count by 12
Put the numbers in order.
timer
1:00
96
12
84
144
24
48
132
72
120
36
60
108
Slide 5 - Drag question
Five and five-tenths
Nine-hundredths
0.09
0.090
5.50
5.500
0.050
0.0050
55.0
0.9
0.900
1.090
Slide 6 - Drag question
Slide 7 - Slide
What is my scale factor?
A
3
B
4
C
1/2
D
2
Slide 8 - Quiz
Enlargement or reduction?
A
Reduction
B
Enlargement
Slide 9 - Quiz
Scale factor = 2
Algebraic Rule is....
Algebraic Rule is....
A
(x, y) --> (1/2x, 1/2y)
B
(x, y) --> (x, y)
C
(x, y) --> (2x, 2y)
D
(x, y) --> (3x, 3y)
Slide 10 - Quiz
Identify an algebraic rule that will stretch a figure horizontally, but shrink it vertically.
A
(x, y) --> (1/2x, 1/2y)
B
(x, y) --> (2x, 1/2y)
C
(x, y) --> (2x, 3y)
D
(x, y) --> (1/2x, 3y)
Slide 11 - Quiz
Identify an algebraic rule that will shrink a figure horizontally, but stretch it vertically.
A
(x, y) --> (1/2x, 1/2y)
B
(x, y) --> (2x, 1/2y)
C
(x, y) --> (2x, 3y)
D
(x, y) --> (1/2x, 3y)
Slide 12 - Quiz
Match the algebraic rule to the verbal description.
Translation 2 to the left, 1 up
Reflection across the x-axis
Rotation 90 degrees clockwise
Dilation with a scale factor of 1/2
Reflection across the y axis
Rotation 180 degrees
Dilation with a scale factor of 3
(x, y) -->(y, -x)
(x, y) --> (1/2x, 1/2y)
(x, y) --> (x + 2, y + 1)
(x, y) -->(-x, -y)
(x, y) --> (x, -y)
(x, y) --> (3x, 3y)
(x, y) --> (-x, y)
Slide 13 - Drag question
In a ROTATION, the preimage and image are
A
similar
B
congruent
Slide 14 - Quiz
In a REFLECTION, the preimage and image are
A
similar
B
congruent
Slide 15 - Quiz
In a TRANSLATION, the preimage and image are
A
similar
B
congruent
Slide 16 - Quiz
In a DILATION, the preimage and image are
A
similar
B
congruent
