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Factor-Label Method Practice

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Factor-Label Method Practice

- Write drill # 13 and the date in your notebook
- Copy the questions (they are on the right side of the board)
- Answer
- 7 minutes, everyone is quiet and in her/his seat

Objective: Students will be able to

- Apply the factor-label method to change units of measurement
HW #10: Get worksheet

English-Metric

Metric-Metric

- 1 inch = 2.5 cm
- 1 lb = 0.45 kg
- 1 mile =1600 m

- 1 m = 100 cm
- 1 m = 1000 mm
- 1 m = 1000 000 μm
- 1 cm = 10 mm
- 1 km = 1000 m
- 1 L = 1000 mL
- 1 kg = 1000 g

- Make a fraction from the equivalence statement
- One side goes on top of the other
- There are two factor-labels for each equivalence statement
- Both equal 1 (one as the number)
- Example:
1 inchor2.5 cm

2.5 cm1 inch

- Multiply the quantity you know by one of the factor-labels
- Which one?
- The one that will help you cancel the unit you are trying to get rid of
- example
- 30 inches to cm
- 30inch x 2.5cm / 1inch
- 30inch x 2.5cm / 1inch
- 30 x 2.5 /1 cm = 75 cm

- Work with your group
- Use inside voices
- Be nice
- Ask your teammates for help
- Use a calculator

- Solve the problem on the right screen together
- Everyone writes on her/his own paper
- Team recorder writes the complete solution on your white board
- Hold up your board when time is called
- Make corrections if needed
- Make sure that everyone in the group understands how to do the problems

- Read “Time and Length” section (3-page packet
- Do not write on the handout (I have to use it again today)
- Take Cornell notes on your own paper
- Read one paragraph at a time
- Write the main idea
- Include 1-2 details
- Move to the next paragraph

Factor-label

Is same as conversion factor

Objective: Students will be able to

- Apply the factor-label method to change units of measurement

You get a second chance to complete the HW from yesterday for full credit

Quiz tomorrow

- Units of measurement
- Factor-label conversions

- ID#, in your seat, and quiet
- Questions:
- Convert 75 m to km. Show the factor labels!
- Convert 48 km to m. Show the factor labels!