## September 09, 2006

### Scribe Post:AP calc. Day 1

Hello everybody, this is Mark and i will be the first scribe for the AP class XD.

NOTE: A good scribe post is fun to read, an excellent scribe post becomes famous =)

Here are the questions that were on the board and we had to answer these questions.
1)

Plot the points on your calculator and then figure out if the functions create a straight line or curved line.

Graphing Calculator
press [prgm]
enter the x column in L1, the f(x) column in L2, g(x) in L3 and h(x) in L4

Next, press [2nd] [y=]
select plot 1 and press enter. turn plot 1 on by pressing enter, here you can select how the points will be plotted (i.e. dots, dotted lines, lines).

You have to go into stat and then select linreg(a+bx) for the straight line, but I'm not sure what to enter for that. For the curved line, you go into stat and then select expreg. If anyone remembers what to input next and how to understand the calculations please post a comment

2)how many roots does the function f(x)=3x4+4x3-x+0.05 have? what are they?

This function has a maximum number of four roots, because the polynomial has a degree 4. Also, since the degree is positive the graph of the function has its ends pointing upward. The minimum number of roots this function can have is zero.

3)f(x) = (7x2-3) * square root of(4-x2)
Find:
i) domain
ii) range
iii) max
iv) min

Here are my answers, we didn't get to go over these in class (post if i made an error)
i)(-3, 3)
ii)(-9,67)
iii)max @ y=67
iv)min @ y=9

Mr. Kuropatwa's lecture

Homework: rest your mind when you get home after school. Relax, have a bite, get some eye candy for about 30-45 minutes. Set a time for yourself when you can do homework after school and not too late. Make it a habit to do your homework at the same time for three weeks, this will train your body and make homework a breeze.

Forgetting Curve:

*not an accurate model*

Studies show that if you review your notes everyday, you will remember (up to) one-hundred percent of the material that was presented to you in class. IF you do not review your notes after the lecture and the days keep passing you by, you begin to forget. after nine days, the graph shows that you will only remember twenty-five percent of the material you learned!!!

Learning: it's easier to understand topics and materials given in class if you discuss about. Learning will be more fun and easier if you TALK. Ask questions in class, partake in the blog, listen attentively, attempt your HW, and talk to others in the class. This will help you practise and practise does make perfect.

Sisyphus:

Sisyphus was set up to fail for eternity, but he does not complain. He just keeps on going, even if he falls.

We are set up to succeed, and it is up to us to decide how far we want to take our success =)

Well, that was it for class. Sorry for posting a bit late. Also post help comments here for question 1 (at the top).

Its that time... i was going to pick someone who did not make a blogger account yet. Sounds kinda mean, but it is a good idea too. If i pick someone who didn't sign up they will sign up because they have to do the scribe =p.

HW: 1.1, odd numbers and question number four

OK...i am not picking someone who has not signed up yet. I choose the person whose name is next on the contributors list, the best Vice President (or i think Pres) Lindsay.

Anonymous said...

Wow! Talk about setting the bar high! Excellent use of colour and graphics. You even included pictures of the Forgetting Curve and Sisyphus.

As a class, you might also be interested in reading about Learning and Remembering.

Anonymous said...

Hi Mark,

I think you're on the road to excellence. I really enjoyed your graphics!!

I'm interested in your reaction to "Mr. Kuropatwa's lecture"--

Best,
Lani

lindsay said...

thanks mark...really. your scribe thingy was quite helpful. i liked the sisyphus drawing, it made me laugh because it's a stickman!

for the first question (that was on the board), i'm not sure if you're explaining it correctly.

1. press stat, edit, then choose the first option. and then you fill in the columns.

2. press 2nd y=, turn on stat plot.

3. make sure your diagnostic is on. press 2nd 0 and then find "DiagnosticOn"

4. go to stat, calc, and then choose the 8th option.

5. LinReg(a+bx) should appear on the homescreen and then press L1, L2, vars, y-vars, funtion, y1
don't forget the commas people!

the closer the r2 and r is to 1 then the most likely it is to be a line. if you want to see if it's a curve then re-do step 5.

yeah well i think that's right. don't take my word for it though.

Anonymous said...

Well done Lindsay! Your comment is exactly what a comment should be ... you really added something significant to a well done scribe. Bravo!

♫ Jann ♫ said...

Hey Mark,
Your scrib post is very impressive. I like the visuals that you included in the post. It helped me alot. Thanks.

MarK13 said...

ty lindsay for posting about question 1.

to lani: my reaction to mr. k's lecture was... not surprising yet not boring. It wasn't surprising because i heard most of the stuff mr. k was talking about last semester. it wasn't boring because mr.k talks with energy =). The class was dead as usual. It's really funny to sit in mr. k's class, since everyone is so quiet. i don't think thats a good thing because now people are not getting involved and starting a good conversation. There are some people in the class who can get something going.

Mr. Ly said...

You sit behind me in class! =D Nice scribe mark, and thanks to both you and lindsay for all the steps in question 1. After a while I got lost in all the buttons and thanks to you guys I was able to review everything at home and I understand it all now. I hope I can make scribes as awesome as you haha! Good stuff.

Anonymous said...

Hi Mark,

Thanks for responding to my interest!

I find Mr. K's "lecture" unique, particularly the "Sisyphus" reference. I'm thinking you and your classmates are very fortunate to learn in his classroom. In my 36 plus years in education, I've not seen such an engaging invitation to learn and succeed.

I think you are absolutely correct in hoping for increased conversation in class; I think that is one of the best ways for a learner to check his understanding of what is being learned! I bet you're one who could really help others become more actively involved. What do you think might be a good way to start?
Lani

MarK13 said...

Well, i could answer more questions in class and try to get everyone talking. I don't think that would work. In the class the two presidents of the school are there =), but they seem pretty quiet. I'm not going to tell my class mates to get involved in the conversation, if they choose not to.

I'll just keep answering questions, even though i may get some wrong. I hav ealways believe in that trying never hurts you. I guess that's the kind of person i am. I know there are people that are better than me, and i am trying my best to pass them. =) Everyone might be shy, but most of us were in the same math class for senior two.

sorry for any typos or my grammar is wrong in some places.

lindsay said...

that's true mark. i think once we get farther into the course, we'll start to converse more in class. i remember in grade 10, for the first month we were SUPER quiet but later we were so talkative. it'll get better i'm sure. =)

be happy.

Anonymous said...

Hi Mark,

I've waited a few days to respond to your last comment. Have been thinking on what you said--

And then the group work postings appeared! There has been lots of good conversation; its great to read all of you celebrating each other's work and politely and constructively helping each along with your learning. I'd guess that in the class conversations there might have been lots of asking questions of each other too.

And that's was what I was thinking on about your response. You're absolutely right; answering questions is a way to jump start everyone's thinking; and a perfect way to double check your understanding! I've found that not understanding perfectly the first time; checking to see that I understand; making an error; hearing another explanation --all that ensures my learning and understanding are deeper and more accurate. I was wondering if asking questions also might do the same and in your asking, might you also be helping a classmate who hasn’t asked and doesn’t really understand?

It’s exciting to watch you and your class work together learning!!

Best,
Lani