We began class with a review on multpilying and dividing with Scientific Notation. This was a review from what we learned with the substitute on Friday. One of the examples are as follows:
$(1.2x10^6m)(2.5x10^4m)=3x10^1^0m^2$
Following that we continued notes we started on Friday on Parallax, Precision, Accuracy, Significant Digits, and Rules for Significant Digits.
Parallax - the shift in position when viewing objects at different angles. Measurements musst be made at eye level
Precision - The degree of exactness that measurement can be reproduced. E.x: 5.14 m is more precise than 5.1 m.
Accuracy - To the extent that a measurement agrees or compares with an accept value or standard.
Significant Digits - When measuring, the precision and number of digits is limited. Significant Digits consist of the all the digits known with a certainty plus the first digit that is uncertain.
Rules for Significant Digits - All non-zero digits are significant
-Zeros between nonzero digits are significant
-All zeros to the right of a decimal are significant
-Zeros only used for spacing the decimal are not significant
All of these definitions are different methods for using, measuring, adding, subtracting etc. with numbers.
The person responsible for Wednesday, September 14th's blog post will be Brooke Ries. :):)
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