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Factor-Label Method Practice & Measurement Conversion Drill

In this practice drill, students will apply the factor-label method to convert units of measurement effectively. Starting with guided practice, groups will solve problems collaboratively, using the equivalence statements provided for conversion. Each equivalence statement will serve as a factor-label, guiding students in their calculations. Individual practice will further reinforce their understanding, with students taking Cornell notes on a provided handout. The session concludes with an exit ticket assessing students' ability to demonstrate conversions using factor labels.

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Factor-Label Method Practice & Measurement Conversion Drill

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  1. Factor-Label Method Practice

  2. Drill # 139/11/2014 • 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

  3. Topic: Factor-Label Method Practice Objective: Students will be able to • Apply the factor-label method to change units of measurement HW #10: Get worksheet

  4. Equivalence statements 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

  5. Factor-labels • 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

  6. Change the unit • 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

  7. Guided Practice – 5 problems 20 minutes, timed • 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

  8. Individual Practice-Work quietly for 20 minutes on your own • 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

  9. Factor-label Is same as conversion factor

  10. Did we achieve objectives? Objective: Students will be able to • Apply the factor-label method to change units of measurement

  11. What’s for HW You get a second chance to complete the HW from yesterday for full credit Quiz tomorrow • Units of measurement • Factor-label conversions

  12. Exit Ticket • 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!

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