PHYSICS CHAPTER 1, SECTION 2

Measurement: Errors, Accuracy, and Precision

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

Investigate pg. 23-24

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

Physics Talk

What are Random Errors?

Produced by measuring tools and human mistakes

Cannot be corrected by calculations

Can never be eliminated

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

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

Metric Conversions Ladder Method

T. Trimpe 2008 http://sciencespot.net/

Metric Conversions Ladder Method

T. Trimpe 2008 http://sciencespot.net/

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

Quiz 1.2