SVRSS Math 40SA May 25 2007

Hello everyone, we started out the class without Mental Math but correcting the assignment he assigned the day before. We made corrections and helped us out with any problems we had with those questions.

We then learned about a new website on how to figure out Trigonometric functions: www.mathdemos.gesu.edu/mathdemos/sinusoidapp/sinusoidapp.html

So the homework for the weekend is that we had to make our own notes from a Winnipeg blog about the formula y=asin(bx+c)+d. Enjoy and have a good weekend...

Infinity is represented on the TI-83/84+ as Egg

Today was the last day of mental math, ever {Ever[like, ever(it will be no more in this class)]} and so Mr. Max was very...sombre about it. So to commemorate and truly honor the last day of mental math, it was extra hard...

Then we were given a speech on how "the Internet is forever". He makes a very valid point, if you put something online (this post for example) it will be online forever. Yes you can delete it and take it off the web but people, somehow, will still have access to it.
This is a commercial for Mr. Max's speech. It really makes you think, and be nervous. Mr. Max also told us that if we get bored while he's teaching to take a look at the 3rd block classes blog.

Anyways, after the speech and telling us to look at the block 3 class blog, Mr. Max began to go over the question he assigned yesterday. I don't know about everyone else but I was lost on that question.




Today Mr. Max showed us four ways that we can solve questions involving Z scores.
(Z score: a measure that quantifies the distance a data point is from the mean of a data set.
basically,a measure of how far from the average of a set of data a number is)

1.) normalpdf(x) and shadenorm(Lowest number, Highest number)

* Infinity on the TI-83/84+ is represented as E99
-> To get this press:

2.) y=normalcdf(Low Z score, High Z score)

3.) www.ronblond.com/M12/norm.big.APPLET/index.html

4.) He also put a spreadsheet into our folder on the course work drive, get there by going to:
coursework, Max's math stuff version 2, 2nd semester block 4 applied40, variability and statistical analysis, STATISTICS

Then, at the end of the class Mr. Max assigned the question about chicken freshness or something...

HARD HOMEWORK!!

First off we started off the day as usual with mental math. Once that was finished he gave us a big list of the stuff that is due and is going to be due as well as when our wonderful probability test is going to be. All of the due date and such are as follows....

-> Driveway Question--Due Monday

->Wiki--Due May 4th

->Accelerated Math Objectives up to 22--Due Tuesday

-> Test Review--Tuesday

-> PROBABILITY TEST--WEDNESDAY

Once he finished laying down that work load on us we went over some of the probability questions that were due.

He went over #1, #3, and #9 with us in the new probability booklet that was given to us.

#1)

#3)

#9) I am sure all of you remember this question. Not so much about what it was about.. but about how Mr. Max did a whole part wrong!!! Sorry Max I just had to rub it in, don't feel bad, even you are human. :)

Hopefully all of this makes sense you to all!! Its pretty tough stuff. Thankfully Mr. Max moved the test back a day!!! Oh and remember #10) in the probability booklet is due Monday.

Hope you guys have a great weekend!

Free Marks For a Homework Check

Add a comment to this post and I'll give you your only homework check marks of the week....Please answer these questions...

1. What did you do this week without your teacher? (i.e. How much of the assigned work have you completed?)

2. What have you got left for homework?

Have a great weekend, folks...

RM

My Take On Permutations

First off I would like to say that this is a interesting way to learn our new unit, but it will also be quite interesting to see what we all come up with and if well we know what were talking about after all. So here i go;;;;

A permutation is an arrangement of objects in different orders. The order of the arrangement is important!!
For example, the number of different ways 3 students can enter school can be shown as 3!, or 3·2·1, or 6. There are six different arrangements, or permutations, of the three students in which all three of them enter school.

The notation for a permutation: nPr
n is the total number of objects
r is the number of objects chosen (want)
(Note if n = r then nPr = n!)

Some examples of Permutations:
1. 5P5 = 5·4·3·2·1 = 120
2. 7P5 = 7·6·5·4·3 = 2520

Here are some Questions you may see and how you can figure out how to do them using the Permutations Formula (nPr) in use!!

1. What is the total number of possible 5-letter arrangements of the letters s,w,i,n,g if each letter is used only once in each arrangement?
5P5 = 5·4·3·2·1 = 120
( 5 letters to choose from, n#, want 5-letter arrangements, r#)

2. How many different 3-digit numerals can be made from the digits of 45678 if a digit can appear just once in a numeral?
5P3 = 5·4·3 = 60
( 5 numbers to choose from, n#, want 3-digit numerals, r#)

Also, as I was searching around I found some interesting websites on Perms & Cons that were helpful to me and thought I would share them with the rest of the class;

1. http://mathforum.org/dr.math/faq/faq.comb.perm.html ( This website gives the break down of how you start out on a question and take the information and put it into the formula)

2. http://regentsprep.org/regents/math/permut/PracPerm.htm (If your not to sure your doing this unit to right you can try these practice questions with the answers)

Is Homework a Waste of Time?

Here's a link to the post Mr. Max was talking about.
http://block3applied.blogspot.com/2007/04/test-day.html
I thought some people might like to see it so we could start up our own discussion about it...

Personally, I think that the amount of homework we are given in this class is reasonable and helpful. Its enough that you keep up with what we're doing but its not so much that you dread doing it.