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Understanding Measurement: Errors, Accuracy, and Precision in Physics

This lesson focuses on the essential concepts of measurement in physics, emphasizing the significance of accuracy and precision, and the different types of errors that can occur, such as systematic and random errors. Through practical activities, students will calibrate stride lengths, measure distances using different methods, and evaluate the reliability of their measurements. The session includes metric conversions, quizzes, and group discussions to enhance understanding. Students will learn to identify sources of errors and reflect on the implications of their findings in future challenges.

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Understanding Measurement: Errors, Accuracy, and Precision in Physics

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  1. Measurement: Errors, Accuracy, and Precision Physics Chapter 1, Section 2

  2. August 13, 2010HW: Physics to Go (PTG)-pg. 32, #6-9 • Do Now (NB pg. 6) • Turn in Current Event • WDYS & WDYT- • TB pg 22 • Success Criteria • Calibrate the length of a stride • Measure a distance by pacing it off and by using a meter stick • Identify sources of error in measurement • Evaluate estimates of measurements as reasonable or unreasonable • Complete various metric conversions • Agenda: • Collect CE • Do Now • 1.2 Measurement: Errors, Accuracy, and Precision • Physics Talk • Metric Mania • Quiz 1.2 • Homework: • PTG, pg. 32, #6-9

  3. Investigate pg. 23-24

  4. August 17, 2010HW: Finish PTG #6-9 • Do Now (below data for 1.2 in notebook): • What is the difference between a systematic error and a random (human) error? • In your groups answer #9 on TB pg. 24 in your notebooks, be prepared to share out • You may use a computer, meter stick or tape measure to help you with the conversions • Agenda: • Do Now • Success Criteria • 1.2 Measurement: Errors, Accuracy, and Precision • Physics Talk • Metric Mania • Quiz 1.2 • Homework: • PTG, pg. 32, #6-9 • Success Criteria • Calibrate the length of a stride • Measure a distance by pacing it off and by using a meter stick • Identify sources of error in measurement • Evaluate estimates of measurements as reasonable or unreasonable • Complete various metric conversions

  5. Physics Talk • What are Random Errors? • Produced by measuring tools and human mistakes • Cannot be corrected by calculations • Can never be eliminated

  6. Physics Talk • What are Systematic Errors? • Can be avoided • Corrected by calculations • Example: If I accidentally measured in inches, when I was supposed to measure in centimeters, I could convert to get the right numbers

  7. Physics Talk • What is accuracy? • What is precision? • How close to an accepted value • Example: Shooting on goal in soccer • Frequency of results • Always hit close to the same spot • Example: Always missing wide right when shooting the ball in soccer

  8. Metric Conversions Ladder Method T. Trimpe 2008 http://sciencespot.net/

  9. August 18, 2010HW:PTG pg. 32 #6-9 • Do Now: In your notebook (below notes) answer the following: • WDYTN? TB Pg. 30 • Reflecting on the Section Challenge: TB pg. 31 • How will what you learned in 1.2 help you with your chapter challenge (pg. 3) • Success Criteria • Calibrate the length of a stride • Measure a distance by pacing it off and by using a meter stick • Identify sources of error in measurement • Evaluate estimates of measurements as reasonable or unreasonable • Complete various metric conversions • Agenda: • Collect Metric Mania • Do Now • Success Criteria • 1.2 Quiz • PTG pg. 32 #6-9

  10. Quiz 1.2

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