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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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Presentation Transcript
slide1
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
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
  • Kinda got it, but then you lost me
  • Ehh…I’m ok
  • I think I got it, but I’d like more practice
  • So confident I could teach it to someone right now
on a scale of 1 5 1 being the least 5 being the most how confident are you with 2
On a scale of 1-5 (1 being the least, 5 being the most) how CONFIDENT are you with #2
  • No clue what’s going on
  • Kinda got it, but then you lost me
  • Ehh…I’m ok
  • I think I got it, but I’d like more practice
  • So confident I could teach it to someone right now
in which problem was the math easier
In which problem was the math easier?
  • #1
  • #2
  • Equal! Both 1 & 2
  • I really had NO IDEA what was going on at all in
bill nye
Bill Nye
  • What did you learn? Anything interesting?
  • Did you find the error?
  • Anything confusing?
  • Any comments?
metric patrol
Metric Patrol
  • NO ALCOHOL OR PRESCRIPTION MEDICATIONS (Tylenol, Advil, etc is ok)
slide7
10

30

200

Questions so far?

slide8
We will complete the first 2 together

12

1.2

22

2.2

3.7

Now you try!

37

56

5.6

67

6.7

75

7.5

Questions so far?

lesson 1 length
Lesson 1: Length

T. Trimpe 2008 http://sciencespot.net/

slide11
1 mile

1.6 kilometers

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

slide12
A. 1 meter or 105 centimeters

B. 4 kilometers or 4400 meters

C. 12 centimeters or 102 millimeters

D. 1200 millimeters or 1 meter

km

Metric Units

m

cm

mm

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.

  • Complete each statement with Metric Units
    • 1 Kilometer (km) = 1000meters (m)
    • 1 Meter = 100Centimeters (cm)
    • 1 Meter = 1000 Millimeters (mm)

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

slide13
Measuring Length

12 or 13 mm

1.2 or 1.3 cm

136 or 137 mm

13.6 or 13.7 cm

slide14
We are about to learn

DIMENSIONAL

ANALYSIS.

It’s a little different…

But after some practice, it’s easy 

(And you’ll need to know this in Chem and Bio)

slide15
Dimensional Analysis

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

What CANCELS?

1030 m

100

What REMAINS?

SIMPLIFY & Solve 

…don’t forget the unit!

10.30 m

OR

10.3 m

slide16
Use Metric 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!!!

1.9768

40.64

156.492

40.56

131.232

279.63

15.14

354.9

110.23

1,609,000

10. CHALLENGE! _____________________________mm = 1 mile

do you prefer
Do you prefer…
  • Dimensional Analysis (I’m a numbers person!
  • Ladder Method (way easier)
  • Either – I can see the benefits of both methods
on a scale of 1 5 1 being the least 5 being the most how confident are you with the ladder method
On a scale of 1-5 (1 being the least, 5 being the most) how CONFIDENT are you with the LADDER METHOD
  • No clue what’s going on
  • Kinda got it, but then you lost me
  • Ehh…I’m ok
  • I think I got it, but I’d like more practice
  • So confident I could teach it to someone right now
slide19
On a scale of 1-5 (1 being the least, 5 being the most) how CONFIDENT are you with DIMENSIONAL ANALYSIS
  • No clue what’s going on
  • Kinda got it, but then you lost me
  • Ehh…I’m ok
  • I think I got it, but I’d like more practice
  • So confident I could teach it to someone right now
slide20
Need some help 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

http://www.youtube.com/watch?v=w0nqd_HXHPQ

Or this website for some detailed explanations and solved examples:

http://www.alysion.org/dimensional/fun.htm

slide21
EXIT SLIP
  • Complete the Post Assessment

(on the BACK of your PRE assessment)

Use either LADDER METHOD or DIMENSIONAL ANALYSIS!

  • Turn in at the in box
  • This is not for a grade, but we will return to this next class
  • Take a copy of your HW

This is not for a grade, but we will REVIEW this next class

on a scale of 1 5 1 being the least 5 being the most how confident are you with 11
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
  • Kinda got it, but then you lost me
  • Ehh…I’m ok
  • I think I got it, but I’d like more practice
  • So confident I could teach it to someone right now
on a scale of 1 5 1 being the least 5 being the most how confident are you with 21
On a scale of 1-5 (1 being the least, 5 being the most) how CONFIDENT are you with #2
  • No clue what’s going on
  • Kinda got it, but then you lost me
  • Ehh…I’m ok
  • I think I got it, but I’d like more practice
  • So confident I could teach it to someone right now
in which problem was the math easier1
In which problem was the math easier?
  • #1
  • #2
  • Equal! Both 1 & 2
  • I really had NO IDEA what was going on at all in
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