Friday, October 10, 2008
FRI-Day 2
AP Chem- NOTE: because there is no school on Monday, I will have extra help on Tuesday morning from about 8AM to 8:45 AM.
We launched write into the Moles/Stoichiometry unit. We started with a review of (weighted average) atomic mass and then went on to the AP version of the "Magic Triangle", with which we can easily inter-convert moles, grams, liters (under ANY T and P conditions!), and particles.
We then did a percent (by mass) composition example.
I have posted some files for you to acquire some more experience with this unit.
Grading the Quantum/Periodicity exam: most of you followed the advice of providing drawings/illustrations (with reference to said drawing) as part of your explanations and, by doing so, more easily earned your credit. I am very impressed with the logic and writing ability of most of the class. However, there is a small minority of students who did not learn the super-important lesson (that I discussed with you in class i.e. WHY the photoelectric effect occurs) from the last exam: an EXPLANATION questions requires that you answer HOW and/or WHY something occurs by linking facts together in a logical sequence to lead to the conclusion that is asked about in the question. Merely re-stating WHAT occurs is called a DESCRIPTION; descriptions do NOT answer explanation questions. If your answer to a HOW/WHY question only states WHAT occurred (especially when "what occurred" is already IN THE QUESTION), credit CANNOT be awarded on the AP exam or on our tests. Drawing out what occurs can BEGIN to lead you to how and why something occurs. Do not forget this important distinction; if you need more practice on seeing the difference between a description and an explanation, see me at extra help.
Bio 6- NOTE: I just properly linked my gradebook to your Blackboard account so you should be able to see your currently graded test, hw, and (by Tuesday!) lab grades. Sorry I forgot about that on Tuesday.
ALSO NOTE: because there is no school on Monday, I will have extra help on Tuesday morning from about 8AM to 8:45 AM.
Today, we introduced the very important life process of cell transport on the molecular level; we defined the term, "diffusion"; then, we saw and explained the CAUSE of diffusion- diffusion MUST occur in any gaseous, liquid, or soluble aqueous solution DUE TO the RANDOM (just as likely in ANY direction) movement of particles/molecules/ions/atoms.
We saw that diffusion occurs through a selectively permeable membrane only to those substances that can fit through the membrane or its "facilitator" channels/proteins.
Bio 7/8- NOTE: because there is no school on Monday, I will have extra help on Tuesday morning from about 8AM to 8:45 AM.
Today, we introduced the very important life process of cell transport on the molecular level; we defined the term, "diffusion"; then, we saw and explained the CAUSE of diffusion- diffusion MUST occur in any gaseous, liquid, or soluble aqueous solution DUE TO the RANDOM (just as likely in ANY direction) movement of particles/molecules/ions/atoms. We saw that diffusion occurs through a selectively permeable membrane only to those substances that can fit through the membrane or its "facilitator" channels/proteins.
We launched write into the Moles/Stoichiometry unit. We started with a review of (weighted average) atomic mass and then went on to the AP version of the "Magic Triangle", with which we can easily inter-convert moles, grams, liters (under ANY T and P conditions!), and particles.
We then did a percent (by mass) composition example.
I have posted some files for you to acquire some more experience with this unit.
Grading the Quantum/Periodicity exam: most of you followed the advice of providing drawings/illustrations (with reference to said drawing) as part of your explanations and, by doing so, more easily earned your credit. I am very impressed with the logic and writing ability of most of the class. However, there is a small minority of students who did not learn the super-important lesson (that I discussed with you in class i.e. WHY the photoelectric effect occurs) from the last exam: an EXPLANATION questions requires that you answer HOW and/or WHY something occurs by linking facts together in a logical sequence to lead to the conclusion that is asked about in the question. Merely re-stating WHAT occurs is called a DESCRIPTION; descriptions do NOT answer explanation questions. If your answer to a HOW/WHY question only states WHAT occurred (especially when "what occurred" is already IN THE QUESTION), credit CANNOT be awarded on the AP exam or on our tests. Drawing out what occurs can BEGIN to lead you to how and why something occurs. Do not forget this important distinction; if you need more practice on seeing the difference between a description and an explanation, see me at extra help.
Bio 6- NOTE: I just properly linked my gradebook to your Blackboard account so you should be able to see your currently graded test, hw, and (by Tuesday!) lab grades. Sorry I forgot about that on Tuesday.
ALSO NOTE: because there is no school on Monday, I will have extra help on Tuesday morning from about 8AM to 8:45 AM.
Today, we introduced the very important life process of cell transport on the molecular level; we defined the term, "diffusion"; then, we saw and explained the CAUSE of diffusion- diffusion MUST occur in any gaseous, liquid, or soluble aqueous solution DUE TO the RANDOM (just as likely in ANY direction) movement of particles/molecules/ions/atoms.
We saw that diffusion occurs through a selectively permeable membrane only to those substances that can fit through the membrane or its "facilitator" channels/proteins.
Bio 7/8- NOTE: because there is no school on Monday, I will have extra help on Tuesday morning from about 8AM to 8:45 AM.
Today, we introduced the very important life process of cell transport on the molecular level; we defined the term, "diffusion"; then, we saw and explained the CAUSE of diffusion- diffusion MUST occur in any gaseous, liquid, or soluble aqueous solution DUE TO the RANDOM (just as likely in ANY direction) movement of particles/molecules/ions/atoms. We saw that diffusion occurs through a selectively permeable membrane only to those substances that can fit through the membrane or its "facilitator" channels/proteins.
# posted by C @ 7:43 AM 
