Under the apple, under internet,
start up Netscape and go to the class web pages.
From the class highlights page, click on
any of the WebCT underlined links, OR
directly type in
(Note this address for when you want to go directly to WebCT if
the mathsci page is down.)
Log-on to WebCT.
Click on the Bulletin Board link. Remember if you have math
questions and can't make it to office hours, this is the place
to post and read other's messages.
Click on the blue underlined Home, on the top left of WebCT.
Click on General Tools and Other Links.
Click on View Your Marks
and Course Record. Looks to see how many credit hour absences
you have as of last week. Look also at your course grades so far.
Click on the WebCT Home Button and then Click on the Calendar and
look at some of the upcoming due dates and Extra office hours.
Click on WebCT Home
Click on Dr. Sarah's Office Hours
From the Office Hours Page, Click on the Math 1010 link
at the bottom.
Jane and Joan Extra Credit
Click on Joan and Jane Extra Credit.
this excel file.
You will see some symbols. Under File, release on Save As... and then
click Save to save the file as joanandjane.xls. Under the apple, under Math
1010 Apps, release on Microsoft Excel. Under File, release on Open, and then
click on joanandjane.xls and Open it. You will see a chart that has numbers and
words filled in.
Click on each number, and look at the formula up to next
to the equals sign, and make sure you
understand it (compare it to your Jane and Joan sheet which I'm
handing back to you). Notice that instead of putting in .08 for the
rate, I referred to the box D2, which is where I put the rate of .08.
We know that at 8% interest, Joan comes out way ahead (see box E2 for the
exact amount) by saving early, even though she put a lot less money in
(she only put in money for 10 years while Jane saved for 34 years!).
For extra credit, I asked what rate would result in equal amounts of
money for Joan and Jane.
Some of you guessed and checked rates, but found this to be a painful
process. We'll have excel solve for this interest rate.
Click on the box E2.
Under Tools, release the mouse on goal seek...
Put the following values in:
Set cell: E2
To value: 0
By changing: D2
What we are asking Excel to do is to change the rate (D2) so that
Joan's Savings - Jane's Savings (E2) is equal to 0. In other words,
we are asking for the rate so that Jane's savings is equal to Joan's savings.
Click on Ok.
Excel will work and then give you an answer. It uses
scientific notation - blahE -5 means blah*10^(-5), ie
.00000blah. Click on OK.
D2 now has the rate which makes A2=C2 (ie Jane's savings at 65
savings at 65).