Friday, Feb 6, 2009 - Block 2 - IB Physics 1

Collected Guestimation and Estimation Worksheets

Went around room asking what students told their parents about yesterday or what was their favorite demo.

Did two more:
17 - look at spectrum
How can we know about the stars? We can't go their - yet. We look at the light that comes to us from the stars.

20 - Franklin

21 - lightning - A knowledge of Physics might save your life

22 - People are ruled by emotion. You have to understand the minds of the stakeholders if you want to sell your product

26 - Principle of Least Time

29 - Quantum theory - energy is quantized.

35 - Fission, fusion - iron

Hand back Sun Labs
Keep the two methods of calculating uncertainty separate
Do not use the average calculated using the min-max method as the result for the method of relative uncertainty.

In Physics we use models. Our diagram of similar triangles is a model. Is this model valid? Can we make a prediction from this model?
Image should be inverted
You should see the image of the Sun if far enough away, regardless of the shape of the Sun.
Show how you can get the image of the Sun through any shaped hole.

So far we have seen several interesting examples of Physics, but what is Physics?
Asked class.

Physics is an activity to search for RULES that EXPLAIN. SIMPLIFY and PREDICT the way nature works. Physics is about finding patterns and making predictions. Science is about finding relationships.

Science arose when humans found patterns in nature and were able to make predictions.

Human beings are unique, at least on Earth
.We wonder about the universe
.We have need to control our destinies

You can memorize a lot of data, or you can find relationships and rules.
Play : YOU CAN'T SAY THE RULE
If you uncover the rule you feel really good. If you can't, sometimes it can be frustrating.

Show Cosmos video about Erastosthenes.

Ran out of time and did not get to the rest.

Hand out user names and passwords for Quia. Ask students to try some of the quizzes and activities, especially those from physical science. Later this weekend, there will be some IB Physics 1 activities for math skills review.

Give students time to work on RA 1.