September 17 & 18

1. 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’)

2. 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

3. 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

4. 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

5. Bill Nye • What did you learn? Anything interesting? • Did you find the error? • Anything confusing? • Any comments?

6. Metric Patrol • NO ALCOHOL OR PRESCRIPTION MEDICATIONS (Tylenol, Advil, etc is ok)

7. 10 30 200 Questions so far?

8. 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?

9. Do Not lose this paper! You will need to reference it all year!

10. Lesson 1: Length T. Trimpe 2008 http://sciencespot.net/

11. 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

12. 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

13. Measuring Length 12 or 13 mm 1.2 or 1.3 cm 136 or 137 mm 13.6 or 13.7 cm

14. 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)

15. 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

16. 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

17. Do you prefer… • Dimensional Analysis (I’m a numbers person! • Ladder Method (way easier) • Either – I can see the benefits of both methods

18. 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

19. 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

20. 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

21. 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

22. 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

23. 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

24. 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

25. Please return your clickers!