1. Easy to assess and grade
Dimensional Analysis
Consistent problem solving approach
Reinforces unit conversion
Simplifies computation
Easy to assess and grade

2. 5 Steps of Dimensional Analysis
Start with what value is known, proceed to the unknown.
Draw the dimensional lines (count the “jumps”).
Insert the unit relationships.
Cancel the units.
Do the math, include units in answer.

3. Write the KNOWN, identify the UNKNOWN.
EX. How many quarts is 9.3 cups?
9.3 cups =
? quarts
Draw the dimensional “jumps”.
9.3 cups x
4 cups = 1 quart

4. Do the Math 1
quart
9.3 cups x 4
cups
2.325 s

5. Show ALL Work
No shortcuts
Use proper abbreviations

6. Given the following information: 1 quark = 2
Given the following information: 1 quark = 2.9 whos whos = 5 mabees bug = 3.7 quarks kuz = 3.2 mabees
3 Quarks = How many bugs
3 Quarks X
1 bug
3.7 Quarks

7. Given the following information: 1 quark = 2
Given the following information: 1 quark = 2.9 who’s who’s = 5 mabees bug = 3.7 quarks kuz = 3.2 mabees
0.65 bugs
7 who’s = How many bugs
7 who's X
1 quark X
1 bug
2.9 who's
3.7 quarks

8. End of slide show, click to exit.

9. Time conversions 1 year = 365 days 1 day = 24 hours 1 hour = 60 min
1 min = 60 sec

10. How many seconds are in one year?
Set up the jumps.
years X
days X
hours
minutes
seconds
years
1 year = 365 days
1 day = 24 hours
1 hour = 60 min
1 min = 60 sec

11. 1 year = 31,536,000 seconds 1 year = 365 days 1 day = 24 hours
1 years X
365 days X
24 hours
60 minutes
60 seconds
1 years
1 days
1 hours
1 minutes
1 year = 365 days
1 day = 24 hours
1 hour = 60 min
1 min = 60 sec