1. Factor Label Method Dimensional Analysis

2. OBJECTIVES Precision VS Accuracy Rounding Numbers Significant Figures
Scientific Notation
Metric Conversions
Factor Label Method
Temperature Conversions

3. SI Prefixes Multiple Prefix Symbol 106 mega M 103 kilo k 10-1 deci D
10-2
centi C
10-3
milli m
10-6
micro
10-9
nano n
10-12
pico p 2

4. Relationships of Some U.S. and Metric Units
Length
Mass
Volume
1 in = 2.54 cm
1 lb = kg
1 qt = L
1 yd = m
1 lb = 16 oz
4 qt = 1 gal
1 mi = km
1 oz = g
1 mi = 5280 ft
1 L = 1.06 qt
1 lb = 454 g 2

5. One Step Conversions

6. Feet to Inches So using that set up how many inches in 3 feet?
Hours in a day?
Feet in a mile?

7. Multiple Step Conversions

8. Factor Label Method
How many Years have you been alive? Days? Seconds?

9. Units: Dimensional Analysis
The ratio (3 feet/1 yard) is called a conversion factor. 2

10. TIPS
1. Start simple. 2. Write units with your numbers ALWAYS! 3. Go step by step. 4. Check your conversion factors. 5. Pinpoint what the question is asking 6. Is your answer logical? 7. Practice, practice, practice.

11. Worksheet
VIDEO
Video