Math 220 BL1 Spring 2008

Math 220 - Spring 2008

**Click HERE for a pdf of the solids that we examined in class on Friday, April 25.

**Click HERE for the lecture notes over Section 5.4: Arc Length from Monday, April 28.

**Click HERE for the lecture notes over Section 5.6: Work from Monday, April 28 and Wednesday, April 30.

Some interesting websites:
Riemann Sums Applet: http://math.dartmouth.edu/~klbooksite/appfolder/tools/RiemannSums.html
Derivative Matching Puzzle: www.univie.ac.at/future.media/moe/tests/diff1/ablerkennen.html
Showing the Tangent Line along a curve: http://www.math.umn.edu/~garrett/qy/TraceTangent.html

Announcements

Thursday, May 8 - Final Exam scores and Overall scores have been posted in the Math Department Score Reports system. The Final Exam will be listed with the prefix "fi" and the Overall score will be listed with the prefix "prOVERALL". Both scores are percentages (out of 100%). The Final Exams were curved - they were counted out of 145 points rather than 160 points. This was done to account for one question that had a mistake in it as well as correct any small grading errors that may have occurred. Letter grades will be assigned as stated in the Course Information packet (see link above).

Wednesday, April 30 - Office Hours on Thursday, May 1st:

                Jennifer:    10-11:30am in 123 Altgeld Hall
                                 2-3:30pm in 159 Altgeld Hall
                Johann:     1-2pm in 178 Altgeld Hall

Wednesday, April 9 - The adjusted Exam 3 scores have now been posted. Version A (the pink exams) will be counted out of a total of 72 points and Version B (the yellow ones) will be counted out of a total of 75 points. When you look at your scores in the Math Department Score Reports you should see one score called ex3 and one called ex3adj. The score called ex3 is your raw score (as a point total) while ex3adj is your adjusted score (as a percentage).

To calculate an estimate of your current overall grade, follow this formula:

[ (MathZone HW Avg %)*0.04 + (Written HW Avg %)*0.08 + (ALEKS%)*0.1 + (Exam 1 %)*0.12 + (Exam 2 %)*0.12 + (Exam 3 %)*0.12 ] / 0.58

Notice these scores are all percentages. For instance, if you have an average score of 8/10 on your written homework, then your Written HW Avg % is 80. Remember that your ALEKS score is either 0 or 100.

Monday, March 31 - After looking more closely, #3 in Section 2.8 and #6 in Section 3.7 on MathZone seem to be working just fine (unlike the announcement made in class today).

Wednesday, February 27 - I will be covering Section 3.1 in lecture on Friday and that section WILL be on Exam 2.

A required mid-semester student survey was given out in discussion on Tuesday. If you missed that discussion, be sure to pick one up on Thursday or print one here: Student Survey. They are due in discussion on or before Tuesday, Dec 4.

In the next MathZone homework, be careful with #7 in Section 2.7. The Guided Solution shows a method we have not covered in class yet. I recommend you solve this one using the method I showed in class for finding the derivative of y=2^x - Example 5 from the Section 2.7 lecture.

Thursday, February 21 - A reminder: if you experience technical problems with MathZone such as not receiving credit when you are "certain" that you typed in the correct answer, you can bring me your written work and I will correct your score if your answer was indeed correct. Thus, you should always be keeping a written record of the problems you work in MathZone (this is also an important study strategy).

Monday, February 18 - Grades for Exam 1 have been posted in the on-line gradebook. Remember that the exam was out of 80 points. The average was a 73.3%, the median was a 78%. If you have any questions about the grading or need to pick up your exam, please come see me during office hours.

There was a typo on the pdf file for Written Homework 4 - make sure you notice that it is due on Thursday, February 21 at the beginning of discussion.

Some people have had trouble with one of the on-line homework questions. For #10 in Section 2.3, do not enter the "y=" or "f(x)=" part of the equation. For instance, if your tangent line works out to be y=3x+4, just enter 3x+4.

Friday, January 18 - Since I did not quite finish lecturing over Chapter 0 today, I've pushed the first MathZone homework back. It is now due Thursday, January 24 at 10am. The written part of Homework 1 is also due on Thursday at the beginning of your discussion section (see the Homework link above for more details). One of your classmates stayed after class today and pointed out how to access the pdf files of the textbook within MathZone. See the MathZone Details link above for instructions.

Tuesday, January 15 - Some comments about ALEKS. The assessment will probably have the name Alison Ahlgren listed on it as the professor/instructor. That is correct - it will not show my name. To see some suggestions about what you can do if you do not earn a 60% the first time, please see the ALEKS link above.