September 17 & 18. Take a CLICKER and the Metric System PRE Assessment from my desk. Ensure you are completing the side that says PRE !!! ( NOT ‘Post’). On a scale of 1-5 (1 being the least, 5 being the most) how CONFIDENT are you with #1. No clue what’s going on
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Take a CLICKER and the
Metric System PRE Assessment
from my desk
Ensure you are completing the side that says PRE!!! (NOT ‘Post’)
Questions so far?
Now you try!
Questions so far?
T. Trimpe 2008 http://sciencespot.net/
1 yard = 0.9144 meters
1 inch = 2.54 centimeters
English vs. Metric Units
Which is longer?
A. 1 mile or 1 kilometer
B. 1 yard or 1 meter
C. 1 inch or 1 centimeter
Left Image: http://webapps.lsa.umich.edu/physics/demolab/controls/imagedemosm.aspx?picid=1167Right Image: http://share.lancealan.com/N800%20ruler.jpg
B. 4 kilometers or 4400 meters
C. 12 centimeters or 102 millimeters
D. 1200 millimeters or 1 meter
The basic unit of length in the metric systemisthe meterand is represented by a lowercase m.
Standard: The distance traveled by light in absolute vacuum in 1⁄299,792,458 of a second.
Which is larger?
Just like saying What's Larger? 100 cm or 105 cm
Just like saying What's Larger? 4000 m or 4400 m
Just like saying What's Larger?
120 mm or 102 mm
Just like saying What's Larger? 1200 mm or 1000 mm
12 or 13 mm
1.2 or 1.3 cm
136 or 137 mm
13.6 or 13.7 cm
It’s a little different…
But after some practice, it’s easy
(And you’ll need to know this in Chem and Bio)
How does the math work?
1030 cm = ______ m?
Multiply by aratio of 1
(just like ratios or fractions)
1030 cm .__1_m
1 100 cm
SIMPLIFY & Solve
…don’t forget the unit!
FIX # 5, 7, 8!!!! (They use ‘l’ instead of ‘L’
ALSO – depending how you round, your answers might vary slightly!!!
10. CHALLENGE! _____________________________mm = 1 mile
Try this YouTube video: http://www.youtube.com/watch?v=XKCZn5MLKvk
Or these two videos from Khan Academy http://www.youtube.com/watch?v=SYkmadc2wOI
Or this website for some detailed explanations and solved examples:
(on the BACK of your PRE assessment)
Use either LADDER METHOD or DIMENSIONAL ANALYSIS!
This is not for a grade, but we will REVIEW this next class