Home Page for Math 221 CL1. Fall, 2009.

Please refresh page to get current version.
Professor: Scott Ahlgren
Email: ahlgren@math.uiuc.edu
Phone: 244-1738
Office: 302 Altgeld Hall

Lectures Monday, Wednesday, Friday 10-10:50 am. 140 Burrill Hall.

Office Hours.

  • Sindhura Mekala will hold office hours Wed. 3-5 in Coble Hall basement (801 S. Wright Street). She is available to discuss course material, homework, and worksheets.

  • Professor Dankowicz will hold office hours Mon. 9-12 in 332C Mechanical Engineering Bldg. He is available to discuss the content of the worksheets and content related to engineering as well as any issues of concern to you as an egineering student.

  • For the next week, Professor Ahlgren will hold the following office hours. He is available to discuss any issue or material related to the course.

  • The final exam is graded and course grades have been assigned. Information on the grading scale.

  • All grades except the final are now entered. Please check your scores and let me know about any problems as soon as possible--preferably by the end of the day on Friday, and by 5 pm on Monday at the latest.


  • Information on the final exam. Handed out on last day of class.


  • University policy on conflict exams.

    Online Homework scores: The homework makes up 14 of the 100 points available. The online homework will comprise 4 of these points. I have dropped the lowest two online scores, and entered the resulting average for your online homework under the category "pronlinehw". You will see this as a score out of 100, and this score will count for 4% of your course grade.

  • Syllabus. Official course information is here.

  • Homework assignments.

  • Worksheets from small sections.

  • Current course grades are here.

  • Webpage for the text book. There are some good resources here. The TEC link has some nice demonstrations, as well as detailed hints for the homework problems whose number is printed in red.

  • Exam 0 and the solution key.

  • Exam 1 and the solution key.

  • Exam 2 and the solution key.

  • Exam 3 and the solution key.

    Exam 3 grading: The median score on exam 3 is 71.5. If this were the only grade of the semester, it would be curved upward. However, it is not the only grade of the semester, and the final exam is worth 30% of the course grade. Any curve for the class will be applied after the final exam and the online homework scores have been entered.

    For your reference, here are the numbers of students in the class whose current course averages are in each range (there are 51 students in the class).

    Exam 2 grading: The mean and median are both 79. Below are the grade ranges, with the number of students in each range, and the approximate letter grade which would correspond to each range if it were necessary to assign a letter grade for this exam. Keep in mind that your final course grade will be determined by your final course average.

    Midterm grades: I have submitted midterm grades as required by the registrar. The letter grade which I submitted is based only on your first two exam scores. I did not assign plus or minus grades. These grades give a rough idea of your position in the class. If you have any questions, please ask me.

    Exam 1 grading: The mean and median are both about 84 out of 100. After the Exam 0 grades were revised, the new median and mean for that exam are also very close to 84. At this point there will be no curve on the exams. Here are the numbers of scores in each range for exam 1 (there are 52 total students).


    Exam 0 grading policy: The median and mean on Exam 0 were both 36 (out of 50). As announced in class, if your Exam 1 average is higher than your Exam 0 average then your Exam 1 average will replace your Exam 0 average.

    WebAssign: This will be provided free to you. Do not pay for access.

  • The main WebAssign page.
  • Register here. Our class key is uiuc 8309 3099.