materials de marker 15 small white boards reminders
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Materials DE Marker 15 Small White Boards Reminders. Musical Math. Use similar triangles to find the length of side x:. 150. 6. 7.5. 10. x. Get out your agenda if you see your name below. You need to come to my room tomorrow. Cornell Notes. Topic:. Stretching and Shrinking: - PowerPoint PPT PresentationTRANSCRIPT
Get out your agenda if you see your name below. You need to come to my room
tomorrow.
Period 4 Period 5 Period 6
CORNELL NOTES
TOPIC:
ESSENTIAL QUESTION(S):
Stretching and Shrinking:Scale and Scale Factor
How do I determine scale and scale factor between models and reality?
CORNELL NOTES
Questions: Notes:
What does scale mean? Scale – the ratio of a length on a drawing or model
to the length of an actual object
Note: a Scale can have different units
Example:
CORNELL NOTES
Questions: Notes:
What does scale factor mean?
Scale Factor – gives how many TIMES larger or smaller an object is
Note: a Scale Factor must have the same units and can be written using a colon (ex. 1:23,000)
Example:
1:16,000,000
1:1,300,000
CORNELL NOTES
Questions: Notes:
How do I write scale? Example:
A map shows 2 inches = 6 feet
Write this as a ratio:
=
Simplify so that the numerator has a length of one.
(3)13
𝑐𝑚=(3)2𝑚𝑒𝑡𝑒𝑟𝑠
1𝑐𝑚=6𝑚𝑒𝑡𝑒𝑟𝑠
CORNELL NOTES
Questions: Notes:
How do I determine scale factor?
Make sure both amounts are using the SAME UNITS.
1 inch on a map = 10 feet in reality
Since there at 12 inches in a foot
1 inch = 10(12) inches
1 inch = 120 inches
1:120
The scale factor from the map to reality is 120.
THIS MEANS THAT IF WE MULTIPLY A MEASURMENT ON THE MAP BY 120, WE WILL GET
THE LENGTH IN THE REAL WORLD.
Class Activity1. Work on WS 5-8 Practice A with your table partner2. We will work the problems together3. Be prepared to share with the class