Content Outline for Teaching - Potosi School District - Home
Content Outline for Teaching - Potosi School District - Home
Content Outline for Teaching - Potosi School District - Home
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2<br />
Section 1<br />
<strong>Content</strong> <strong>Outline</strong><br />
<strong>for</strong> <strong>Teaching</strong><br />
Measurement<br />
Description and Measurement<br />
Underlined words and<br />
phrases are to be filled<br />
in by students on the<br />
Note-taking Worksheet.<br />
A. Measurement—describes world using numbers<br />
1. Types of measurement—distance, time, speed, volume, mass<br />
2. Measurement can also help describe events.<br />
B. Approximated measurement based on previous experience is estimation.<br />
1. Estimation is useful when actual measurements are not easily made.<br />
2. Estimation can check that an answer is reasonable.<br />
3. When you estimate, you often use the word about.<br />
C. Precision and accuracy<br />
1. Precision—a description of how close measurements are to each other<br />
a. Used to discuss number of decimal places a measuring device can measure<br />
b. Degree of Precision—today’s measuring devices are more precise.<br />
2. Accuracy—comparison of measurement to actual value<br />
3. Precision and accuracy are important in many medical procedures.<br />
4. Measurements can be rounded when precision is not needed.<br />
5. Significant digits—reflect true precision of a calculation<br />
a. Multiplication or division—measurement with the fewest digits determines<br />
the number of significant digits.<br />
b. Addition or subtraction—significance determined to the place value of the<br />
least precise measurement<br />
Discussion Question<br />
How can estimation be useful? when actual measurements are too difficult to obtain; when<br />
verifying realism of a calculation<br />
Measurement 5
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