1. Catalyst – January 6(4), 2013 HOW OUT! Grab a CALCULATOR
1. A car averages 27 miles per gallon. If gas costs $4.04 per gallon, which of the following is closest to how much the gas would cost for this car to travel 2,727 typical miles?
A. $  44.44
B. $109.08
C. $118.80
D. $408.04
E. $444.40
When x = 3 and y = 5, by how much does the value of 3x2 – 2y exceed the value of 2x2 – 3y ?
F.   4
G. 8
H. 16
J. 20
K. 50
What is the value of x when x + 3 = 3x – 4 ?
A.  –7
B.  -1/5
C.   1
D.  1/5
E.   7

2. Today’s Agenda Catalyst Error/Percent Error Practice Problem 3
HW Questions?
Quiz Stats, Return, and Mastery Tracking
New Notes! Dimensional Analysis!
Work Time!
Exit Question

3. Error and Percent Error
Key Point #3: Error and percent error are both ways to describe the accuracy of a measurement.
Error = Estimate – Actual Value
% Error = Error x 100
Actual

4. Error and % Error Example 3
Henry Heavyfoot was just arrested for speeding by Officer O'Rourke for traveling 65 mph in a 55 mph zone.
Henry claimed his speedometer said 55 mph, not 65 mph. What is the error and percent error of Henry’s speedometer?

5. Quiz 1 Class Grade Averages
1st Period: 71.8% 2nd Period: 82.0% 4th Period: 80.8%

6. Quiz 1 Champs 1st Place (102): Lionel Greer, Jr. (2nd period)
2nd Place (101): Kara Francois (1st period)
3rd Place (100): TraMichael Louis (2nd period)

7. Quiz 1 Champs: Honors 1st Place (104): Ashley Bran
2nd Place (99): Aldren Wilson
3rd Place (94): Ashley Lavine, Peyton Zimmermann, Abby Richmond, Tiffany Dalmado

8. Resume – Mastery Tracking!
Count up the number of points you got correct for each GLE by looking at the questions for that GLE
Look at each question’s point value (usually 5 points)
Calculate percent mastery for each GLE and for your overall average mastery using this formula:
Your Points/Total Points Possible x 100

9. SWBAT write conversion factors for metric units.
Today’s Objectives
SWBAT write conversion factors for metric units.
SWBAT solve 1-step unit conversions using dimensional analysis.

10. LESSON TITLE: DIMENSIONAL ANALYSIS (CONVERSIONS)

11. CONVERSIONS
GET READY FOR AWESOME!

12. Conversion Factors
Key Point #1: Conversion factors are used to convert or go from one unit of measurement to another.
YOU ALREADY KNOW THIS STUFF!
Examples:
10 dimes= 1 dollar
20 nickels= 1 dollar
4 quarters= 1 dollar

13. Conversion Factors on Blast!
Key Point #2: Conversion factors can be written in 2 ways…
As a fraction that is equal to the number 1
As an equivalent

14. Two Ways to Write CFs Fraction Equal to 1 Equivalent __1 m = 1000 mm
__1 hg = g
100 g hg
100 g = 1 hg
1 hg = 100 g
__1 L = nL nL L
1 L = 109 nL
109 nL = 1 L

15. Dimensional Analysis
Key Point #3: Dimensional analysis is a tool used to convert from one unit to another. It relies on accurate conversion factors.

16. Working on the Railroad
Step 1:
What to what?
Step 2:
Write conversion factor(s)
Step 3:
Train Tracks
Aka Math Set-Up

17. Practice! One-step problems.
How many meters are in 10 centimeters?
How many centimeters are in 327 meters?

18. Exit Question
Write the conversion factor between the following units: centigrams and grams.

19. Catalyst – January 5(5), 2013 HW OUT PLEASE!
Write a response to the following questions…
What do you think about 3-D TVs and movies?
What do you think is the FUTURE of 3-D technology?

20. Today’s Agenda Catalyst/Future Friday 1-Step Practice/Metric Olympics
2-Step Notes
Work Time
Group/Student of the Week!
Exit Question

21. SWBAT solve1-step and 2-step conversions using dimensional analysis.
Today’s Objectives
SWBAT solve1-step and 2-step conversions using dimensional analysis.
SWBAT CONVERT IT LIKE IT’S HOT!

22. Conversion Factors
Review KP #1: Conversion factors are used to convert or go from one unit of measurement to another.
YOU ALREADY KNOW THIS STUFF!
Examples:
10 dimes= 1 dollar
20 nickels= 1 dollar
4 quarters= 1 dollar

23. Conversion Factors on Blast!
Review KP #2: Conversion factors can be written in 2 ways
As a fraction that is equal to the number 1
As an equivalent

24. Two Ways to Write CFs Fraction Equal to 1 Equivalent __1 m = 1000 mm
__1 hg = g
100 g hg
100 g = 1 hg
1 hg = 100 g
__1 L = nL nL L
1 L = 109 nL
109 nL = 1 L

25. Dimensional Analysis
Review KP #3: Dimensional analysis is a tool used to convert from one unit to another. It relies on accurate conversion factors.

26. Working on the Railroad
Step 1:
What to what?
Step 2:
Write conversion factor(s)
Step 3:
Train tracks

27. Volume - Liters
<
<
1 mL
1 L
1 kL

28. Mass - Grams .
<
<
1 mg
1 g
1 kg

29. Length - Meters .
<
<
1 mm
1 m
1 km

30. Practice! One-step problems.
How many meters are in 10 centimeters?
How many centimeters are in 327 meters?

31. Practice! On your own! Example Problem:
A roll of Christmas gift wrap contains 2.5 meters of paper. What is the length of the paper in yards?

32. Worksheet Review
1-5

33. Always remember…
Key Point #4: In two step problems, always convert to the unit without a prefix first.
Mass: grams
Distance: meters
Volume: liters