Unit 1 is an introduction to physics. It covers topics such as the meaning of physics, the scientific method, laws and theories, the mathematics in physics (scientific notation, significant figures,dimensional analysis), measurement, and graphing. To be successful in your understanding of unit 1 you need to read chapter 1 of your textbook, take notes during my lectures (review them on Sophia.org), watch video clips, and complete the practice problems on homework pages. Following is a list of concepts you need to understand after completion of Unit 1:
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Source: Bob Grove
Sheldon attempts to help Penny understand Leonard's work by teaching her... Physics.
Source: Copyright belongs to CBS and its affiliates.
An introduction to sig figs via the Khan Academy
Source: http://www.khanacademy.org
A humorous look at Sig Figs
Source: Mark Rosengarten
Dimensional analysis (DA) is used extensively in engineering and science, especially chemistry and physics but it can be useful any time you want to perform conversions from one unit to another type of unit. For example, you may need to convert measurements such as length, mass, time, electric charge or units of measurement such as miles vs kilometers, pounds vs kilograms vs grams, etc. Converting from one "dimensional" unit to another can be pretty complex but DA or the "factor-label method" (also known as the unit-factor method) controls this complexity by using the rules of algebra.
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For this part of the lesson I'm using a video clip from Brightstorm Chemistry to illustrate DA. There are many other video clips out there on the net and in Sophia too. Watch what you need to get this down...you will appreciate your understanding of DA many times throughout your year in physics.
Source: Bob Grove
This video clip from Brightstorm Chemistry discusses dimensional analysis (page 6 in your textbook).
Source: Brightstorm Chemistry
Here is a lesson fron another teacher on Sophia.
Precision vs Accuracy: Click this link - http://www.sophia.org/tutorials/accuracy-and-precision-in-measurements
Source: Ryan Backman
Paul Andersen explains how graphs are used to visually display data that is collected in experimentation. He describes five main types of graphs; line graph, scatter plot, bar graph, histogram and pie chart. He describes the important elements of a successful graph including labeled axis, title, data and a line of fit.
Links at the end of the video include:
How to graph by hand:
https://www.youtube.com/watch?v=GUYRM...
How to graph by spreadsheet:
https://www.youtube.com/watch?v=yvYvH...
Source: Bozeman Science (Paul Andersen)
Here is where you can get a copy of your assignments for this lesson: Click here -https://drive.google.com/folderview?id=0B754cQ-atnw0UUhEWVBvQzhzNzA&usp=sharing
The above link gives you access to my Google Drive
Source: Bob Grove
Significant Figures: http://www.dallassd.com/our%20schools/high%20School/Chemsite/chem/hotpot/sf.htm
Sig Fig Calculator: http://sigfigscalculator.appspot.com/
Source: Bob Grove
