Today's Slides: June 8

Here they are ...





To see a larger image of the slides go here. When you get there you'll see a button in the bottom right-hand corner that says [full]. Click it and the slides will display in full screen mode.

PRECAL40S: LAST SCRIBE ... for me at least.

HEY GUYS! sorry my scribe was a day late. I had work yesterday and came home very late so anyways I will be the scribe for yesterday and today ... here goes

JUNE 6, 2007: MORNING CLASS

We had an exam rehearsal for Circular Funtions







The answers are pretty straight forward ...

JUNE 6, 2007: AFTERNOON CLASS

We had another exam rehearsal for Combinatories







and again the answers are pretty straight forward ...

JUNE 7, 2007: MORNING CLASS

Yet, Again we had another exam rehearsal for Logarithm. We had a substitute for Mr. K. She didn't really gave us numbers to be in groups so instead we chose our own groups. Everyone worked on it but in the end we found out that we didn't have to hand it in. The answers are not up yet but I'm pretty sure Mr. K will put it up sometime later tonight. Well that's all for now and the scribe for tomorrow's class is .... SANDY!

SCRRIBBEE

Hi guys I'm your scribe for today. K, so I'm going to have to remember it on top of my head with the help of MrSiwWy. Since the podcast and the slides aren't up yet. Or maybe its just my computer? hmm, anyways here it is ...

MORNING CLASS:
We started a new unit today it is called "The Fundamental Princple of Counting". We were about to start but then the computer crashed. So Mr. K couldn't access to his lesson plan. We just waited a bit then BOOM it started working! Then we started and we talked about the combinations of ties, pants and shirts. There was a question that goes a little something like this

how many outfits can be made from 3 pants and 4 shirts?
3 x 4 = 12

Now you can do it using a tree diagram and it looks like this ....

with two pants, three shirts and two ties.

We did more problems that has to do with tree diagrams and we got into factorials. The symbol for it is ! (yep, its an exclamation mark)

Definition:
n! = (n) x (n-1) x (n-2) x (n-3) its also the same as ... 3 x 2 x 1
0! = 1 (Mr. K will explain more later on this unit why zero factorial is equal to one)

How do you punch it in the calculator?
Hit the botton that says [ MATH ]
At the top of your screen you see the selections [ MATH ] [ NUM ] [ CPX ] [ PRB ]
Use the arrow keys and higlight [ PRB ] then hit the number [ 4 ]
It should then appear to your screen !

Then we had to simplify the following factorial ...


AFTERNOON CLASS:
In the beginning of the class we mostly talked about our D.E.V. We also discussed Grey-M's D.E.V project. Which by the way was very awesome! Good job!. Then we talked about the rubric for it. Mr K. feels that there should be some changes in the rubric. Then for half the class we were put in groups and practiced more on our new unit. Here they are ...


Whooott I'm done. FINALLY! Good thing I wrote down the examples. Have a good night everyone. on BTW the next scribe will be .... SANDY!

Fight Night BOB 4

Hi Again... I'm Bobbing again... So Anyways... This unit was simple yet hard at the same time. I'm actually very serious about it. I got most of the easy stuff... AKA A LOGARITHM IS AN EXPONENT!!! Which was easy... Graphing was simple... b/c of previous units and my handy calculator... Yet the only thing that really bugged me was those exponential decay questions... I admit... that I was lost during those questions because I missed one class on them... I just have to work harder on them... =) So everyone good luck on the test and commit one random act of kindness before the test and you will have better luck!!!! ha ha ha ha... YackPack This!!! And hope for the best of luck on the test tomarow again!!! hahaha.

BOB-ing 4

WOOWW! I haven't noticed we're already halfway through the semester because of the pile of assignments and projects that teachers give us these days. i suppose this unit is easier than the first ones. However, I'm not used to the questions Mr K. includes on the tests and quizzes. They are harder. Well of course, they would be. But I just hope we practice with hard questions so that when we encounter them, we know what to do! LOGARITHM IS AN EXPONENT is the idea that we all SHOULD remember. I just hope I do because it will propel me to achieving success in this unit! HAHA! Well, I'm going to review now. Good luck everyone!

Brilliant Online Bloggers

For me, this unit has been very interesting, but at the same time confusing and hard.

One thing that has been hammered in our heads for a million times:

Logarithms are Exponents, Logarithms are Exponents, Logarithms are Exponents, Logarithms are Exponents, Logarithms are Exponents, Logarithms are Exponents, Logarithms are Exponents,Logarithms are Exponents, Logarithms are Exponents

"Teachers LOVE this unit because of the neat manipulations they can do, while students DISLIKE this unit because of the neat manipulations you can do."
There's a lot of equations that were given to us through out the past week... Here are some of them...

A = A₀ (MODEL) ^t

P = Principle, r = rate, t = time;
A = Pe ^{r t} log (ab) = log a + log b log (a/b) = log a - log b

.Honestly, I'm having quite some problems here in this unit... The equations that we must use still has me all confused and sometimes I overcomplicate things in the test. ..Good Luck on the test Everyone !!!...

BOB

Well I'm not really satisfied with what I can do right now with this unit. This unit started out quite easy but when it came to problem solving and stuff I got confused. I feel like I could do a couple more problem solving questions to fully understand it. I understand how log and ln stuff go on but on the problem solving stuff I just don't know what formula to use. Other than that I think I can do quite alright on the test. Good luck to everyone tomorrow and I hope that everyone does well.

BOB ... BOB ... BOB ... BOB

I already started on one but I can't seem to find it. Oh well, anyways my reflection on this unit. Well, like everyones saying another unit has finished. I would say that it was an `Okay` unit. Sort of like in the middle. In a way its fun. Except for the whole population of this and that and finding out the model of bacterias such and such. You know what I mean. I haven't been to class lately but this time I'm going to pull geek mode! Don't take it the wrong way. Its good, really! :)

"Teachers love teaching this unit because there's so many manipulations you can do. Students hate learning this unit because there's so many manipulations you can do."
Hahah, oh yes Mr. K your right! -_-"

I have to go and hit up the notes. GOOD LUCK EVERYONE! AND GOOD NIGHT!

BOB v3

Hello motto. Test on exponents and logarithms is tomorrow! This is my unit. "Teachers love teaching this unit because there's so many manipulations you can do. Students hate learning this unit because there's so many manipulations you can do." Well isn't this quite true? So many confusing concepts to know it's horrifying! Good luck and have fun tomorrow!

PEOOOW

BOBIIII

Well, hello again back for another BOB. This unit was so very easy when we had begun it, although the exponential questions toward the end of the unit were a lot harder and sometimes confusing. As the unit on logarithms were not hard until you had to piece it all together in exponential modeling questions. All in all I found the exponent and logarithms unit to be very fun and it was also very educational. Especially those exponential modeling questions which were used for real life situations. So I better get back to studying, bye for now and good luck and study hard!

Questions, Questions, and More Questions!

FIRST CLASS:

We did a quiz and a couple of questions here's the answers in a more detailed explanation:

For this question, you can think of log 2000 as log (2 x 1000). Then knowing that logs are exponents, we know that when exponents are being multiplied they're really being added together, therefore we get log 2 + log 1000. The value of log 2 is already given as 0.301 and the value of log 1000 is 3 because 10^3 is 1000. Add the two numbers together and you get 3.301, the closest answer to this value would be B).

In log 8 we can change the 8 to 2^3 because that's equivalent to 8. Then since 3 is an exponent we can take it out and put it in front of log so it looks like 3log 2. We know the value of log 2 which is 0.301. Multiply it by 3 and you get 0.903. Closest answer to that is C).

There's actually two ways you can come about to answer this question. First way, you know that log 2 = 0.301. With that you can take the reciprocal and punch it into your calculator to give you an answer around 3. Then there's the much easier way of just finding values for x in 2^x that would give you an answer closest to log2 (1o), which would be 3, that answer is C).

The first one basically explains itself so I'll move onto the next one. This is basically just like the first one however there's an extra step to finding the answers. You must first factor the 4 as an exponent which gives you 2². since the exponent 2 and the log are both exponents you can place the 2 as an exponent of 3. This allows the two bases of 2 cancel out along with the log which leaves you with 3² which gives you 9 as an answer.

To find the answer to this question you change both logarithms into exponents which gives you 3^k = 10 and 9^x = 10. Then in order to solve for x you must make the bases of each exponent the same, we do this by changing 9 to 3² which is the exponential equivalent to 9. Now since we have the same bases all we need to do is solve for the exponential part of the power which gives us x = k/2. That would be answer C).

SECOND CLASS:

We had a Pre-test on Logs & Exponents, here's the answers in more detailed explanations:

.........ok nevermind, the blog is refusing to let me upload my pictures onto this post therefore I can't provide you with questions and detailed explanations, this will have to wait even longer now, I'm sorry but this WOULD'VE been done tonight if it weren't for this DAMN glitch, my apologies again.

SCRIBE FOR TOMORROW IS JENG!

BOB

This semester has surprisingly gone extremely fast and here we are done another unit. This one by far is one of the most annoying units I've ever had to learn haha. It started off fairly easy for me and as the unit progressed things became more complicated. Like Sandy I missed a day of work but it didn't seem like much and thankfully there's the blog to keep me up to date! I hope everyone studies hard and good luck on the test! REMEMBER LOGARITHMS ARE EXPONENTS!!!

BOB

This semester is going by super fast. Here comes and goes another unit. Honestly, the unit started off quite easy. I missed a day when everyone learnt about how to graph logarithms because I was at the Convention Centre volunteering for the Career Symposium. However, the slides and podcast did help a bit, along with asking questions. (: Other than that, I think this unit test should be a good one. Good luck everyone.

Blogging on blobbing

Hello everyone! today marks the conclusion of our fourth unit called exponents and logarithms. I think that this unit was quite okay for the most part until we start dealing with the exponential modelling stuff. This problems seems to be really hard for me but I think that i'm starting to have a better undestanding of it now. I realize that this kinds of questions can be solve easily by just understanding what is given to you and using the right formula. good luck everyone and study hard!!!

BOB Marley

This is our third unit Exponents and Logs, yeah, not very easy. Well it started off easy when we were doing all the simple stuff, and it feels like we just ran right though all the complicated things. So it's like i get it, but i dont really understand it. Just wish i had more time or help to understand it fully, but no time for that TEST IS TOMORROW.

G00d LucK Every0n3!

Bob..

This unit was filled with questions where I found that the answer was much more simple than I was thinking. I tend to make things complicated and the real problem is finding out if I'm on the right path or not. However, this unit wasn't too difficult. Ofcourse there may be unexpected questions on the test but all I can do is hope I'll know how to answer them. That, or practice more. Otherwise it's like all other math units, practice makes perfect!

Logarithms are exponents!

Goodluck!

BEE OH BEE number four!

Exponents and Logs weren't that difficult at first. One thing I learned for sure is that : Logarithms are Exponents. Converting exponents into logarithmic form and back wasn't hard. Using the change of base law wasn't hard either. What I found hard was the problems that involved exponential models. The quiz this morning caught me off guard as well. Clearly I was highly unprepared for that and the pretest wasn't that bad but those problems do get the best of me. They are a challenge for me and hopefully I do well on the test. Same to everyone else. Good luck and study hard!

BOB

Once again I must reflect on a unit and here is my bob. This unit was pretty easy and I really enjoyed it until we got into the big problem solving problems. These more complicated problems are hard to grasp but I think that I get the hang of them now. Exponents and Logarithms is one of our longer units and I think that its a cool unit. One last thing...Logarithms are exponents!!! Well test tomorrow and I wish everyone the best of luck. Bye for now and see you soon!

Today's Slides: April 16

Here they are ...





To see a larger image of the slides go here. When you get there you'll see a button in the bottom right-hand corner that says [full]. Click it and the slides will display in full screen mode.

More Exponential Modeling

Hello every one, it is Dino again. Today's class was all about review, because we have finished all of the exponents and logarithms unit. So basically today was a review day so everybody in the class was able to become more familiar in doing exponential modeling questions. Mr. K was also explaining to the students in class today, that on the 17th of April, the Pc40sw07 class was supposed to have a skype conversation with Eddie's class in Georgia, but due to Eddie's class having tests that week, it is postponed until further notice, maybe the week after. Mr. K was also explaining to the class that there was going to be a test on grade 12 pre-cal material that was to be written of the 17th of April from the University of Waterloo, and if anyone in or under grade 12 is interested in writing the test, they were supposed to see Mr. K.
Then Mr. K pulled up more exponential modeling questions on the smart board which were done in groups. I would have liked to show you and explain the slides, although Mr. K did not post them, but that is not to be any worry, because they will probably be posted on Monday, because we did not complete all the slides for the review so we will finish them Monday Morning. As Monday morning is going to be a review period and there will also be a quiz, so that means that Monday afternoon is the pre-test. Tuesday's class is going to be the test day for the Exponents and Logarithms unit.
So Study, Study, Study for Monday's quiz, pre-test, and Tuesday's Test. Make sure to get in those Bobs before the test on Tuesday. Good Luck and Study Hard!

The next Scribe is going to be...........Danny