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
Take a CLICKER and the
Metric System PRE Assessment
from my desk
Ensure you are completing the side that says PRE!!! (NOT ‘Post’)
10 CONFIDENT are you with #2
Questions so far?
We will complete the first 2 together CONFIDENT are you with #2
Now you try!
Questions so far?
Lesson 1: Length CONFIDENT are you with #2
T. Trimpe 2008 http://sciencespot.net/
1 mile CONFIDENT are you with #2
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
A. 1 meter or 105 centimeters CONFIDENT are you with #2
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
Measuring Length CONFIDENT are you with #2
12 or 13 mm
1.2 or 1.3 cm
136 or 137 mm
13.6 or 13.7 cm
We are about to learn CONFIDENT are you with #2
It’s a little different…
But after some practice, it’s easy
(And you’ll need to know this in Chem and Bio)
Dimensional Analysis CONFIDENT are you with #2
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!
Use CONFIDENT are you with #2Metric Magic and Dimensional Analysis to complete the following problems. Need help? Ask a friend or ask a teacher. SHOW ALL WORK, round to at least 2 decimal places!
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
Need some help with dimensional analysis? CONFIDENT are you with DIMENSIONAL ANALYSIS
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:
EXIT SLIP CONFIDENT are you with DIMENSIONAL ANALYSIS
(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
Please return your clickers! CONFIDENT are you with #2