Physics 211 Course Description

Y Physics 211 Course Description

Introduction

Welcome to Physics 211, Introduction to Classical Mechanics! In this course we will discuss the basic laws describing forces and motion and we will develop the mathematical framework needed to understand these in some detail. These topics are important, not only because they are extremely interesting in their own right, but also because they form the foundation upon which most physics and engineering is built. It is our goal that at the end of this course you will understand the main concepts of mechanics, be able to apply them quantitatively for solving relevant problems, and appreciate qualitatively how they play a role in many aspects of our lives. The road to understanding is not a particularly easy one, but the journey is well worth the effort. In order to help you, we have devised a multifaceted approach intended to maximize your conceptual understanding and ability to solve practical problems.

Overview

The basic teaching philosophy of Physics 211 can be summarized as follows:

1. Introduction and first chance to think about it (prelectures and preflights)
2. Untangle it (lectures)
3. Challenge yourself (homework)
4. Play with it (labs)
5. Close the loop (discussion)

The order of the above items is critical.

The first exposure you will have to the material will be in the prelecture (1). These are new research-based multimedia presentations designed to introduce the key ideas/concepts of the lecture. You will do these on your own prior to each lecture. This first step should be taken very seriously, as all of the following items depend on this pre-exposure.

To get the most out of lecture your participation is required both prior to and during each lecture! Before every lecture you will be required to work through a brief "preflight" on the Web. Each preflight will probe your understanding of the prelecture material for that lecture, and must be completed by 6am on the day of the lecture to receive credit. There are no "bad" preflight answers. You will receive full credit if you give it your best shot and answer all the questions.

The lecture (2) will take the concepts you have read about and expand/explain them, usually with the aid of demonstrations. The lectures themselves will be interactive, and your participation is strongly recommended. Student questions and comments in class are encouraged, especially related to concepts and problems you found difficult in the preflights. You will participate using the i>clicker and will get full credit if you give your best shot. You can also earn "extra-credit" for the questions you answer correct.

The Web-based homework (3) covering each lecture's material is due as listed. This means you will usually have the background of working through the prelecture and preflight of two lectures to guide you in finishing each homework assignment. Homework problems are designed to test your understanding of the concepts as well as developing problem-solving skills.

The lab cycle (4) is designed to give you the opportunity to explore the concepts you have encountered in lecture. Check things out. Does the World really behave like we have said?

To cap things off, a 2-hour Discussion section (5) will go over the concepts you have learned about in the previous lectures, lab and homework. Also there will be open office hours every day to give you one-on-one assistance if you need more help; do not be bashful about taking advantage of these!

In order to succeed in Physics 211, you must not fall behind! This course covers a large amount of new material, and the understanding of new topics usually requires mastery of previous material. The pace in summer is unforgiving. Do not fall behind!

To help you keep track of "what is due when" we have put together a handy Web based daily planner, available on the course webpage.

Course Component Details

PreLectures+Preflights:

You are required to complete a web-based prelecture and preflight prior to each lecture. The prelectures are web-based multimedia learning activities that include embedded questions. You may attempt each question several times, however you must get the questions correct to complete the activity. You will receive 2 points for each prelecture you complete. Once you have completed the prelecture, the preflight will be available. While we don't expect you to get correct answers to all of the preflight questions, they will be checked for a good faith effort. Each completed preflight is worth 1 point. There is no late credit for prelectures or preflights.

Lectures:

Since you will already have been exposed to the basic concepts through the prelecture, the lectures will spend relatively little time in the traditional lecture format. The primary focus of the lecture will be on expanding your understanding of the material based on your preflight responses. This will take the form of interACTive learning segments (ACTs). During these segments students will work in groups on a specific assigned problem and can discuss the results with other students and with the lecturer. This will allow the instructor to pinpoint problems in understanding and deal with them before moving on. The purpose is to help you understand, and your participation is critical.

In order to provide an environment more conducive to participation and interaction, each student will have an "i>clicker" with which to answer various questions during lecture. You will receive one point based on your participation in each lecture. You may also earn up to one additional "bonus" point for each lecture based on the fraction of the ACTs you answer correctly. These bonus points will be directly added to your Homework/Quiz final score. For example, if you get 50% of the ACTs correct in each of the 28 lectures, you would earn 14 "bonus" points that would directly increase your Homework+Discussion score.

Be sure to register your i>clicker from the 211 Homepage.

The notes from each lecture will be posted on the course webpage.

Homework:

You are responsible for completing computer-based homework assignments. These assignments are graded and are an important part of the course. The only way to really understand these topics is to work lots of problems.

To start work on a homework assignment, click once on the "Homework" link on the Physics 211 homepage. Then click on the assignment you wish to do. The current assignment can also be reached from the "Planner" page of the Physics 211 homepage.

The homework assignments consist of two parts: Homework A (problems where you are given help and feedback), and Homework B (an "online quiz" type problem for which you are not given feedback until after the deadline). There are also a number of optional exercises available, designed as "warm-up" exercises for the homework problems.

The full-credit deadline is 8:00 am on the day listed for each homework set. There is no late credit for Homework B. For the Homework A problems, work done after -- but within one week of -- the deadline for a set receives a 10% penalty. Note that this is a relatively small penalty and that it is well worth doing the homework even if the full-credit deadline has passed. There is no late credit for any of Homework B.

You may work a problem or part of a problem as many times as you like.

Discussion Sessions:

Each week you will attend two 2-hour discussion sections conducted by a TA. These sections will be active learning sessions in which you will work in small groups solving problems provided to you by your TA. Discussion sessions are designed to aid you in the understanding of the course material. You will find them beneficial in preparation for the hour exams.

During the Discussion sessions we often do one of the exercises in Tutorials in Introductory Physics. It is important that you bring this book to each Discussion session.

At the end of each Discussion session, your TA will administer a short quiz (usually about 20 minutes in length) based on the current material. This quiz will be graded and recorded in the gradebook. It is important to bring your calculators to each discussion session.

Lab Sessions:

The laboratory portion of Physics 211 will consist of eight 2-hour laboratories, each involving a series of activities, including (i) setting up simple experiments to investigate topics you've studied in class, (ii) making predictions about the outcome of your experiments, (iii) performing measurements of different phenomena you've studied in lecture, (iv) analyzing your experimental results, and (v) answering questions concerning your results and predictions. You will complete the lab write-ups during the lab section and hand them in at the end of the lab section. Additionally, all labs (except the Laboratory Orientation) will require completion of pre-labs which are to be handed in at the beginning of the relevant lab section. Your total laboratory score will be worth 15% of your grade. Of the 20 points allotted for each laboratory, 15 points will be awarded for participating in and completing the laboratory, and answering questions in the lab write-up and up to 5 points will be awarded based on the answers to questions in the prelab.

Exams:

Three multiple-choice hour exams will be given. (See the Course Schedule for the dates.) They will be given in this lecture hall, Loomis 141. Bring a calculator and a #2 pencil to all exams. In addition, bring your official University identification card or iCard to show upon request.

Conflict exams will be scheduled for those with a legitimate (documented) schedule conflict.

Exam scores will be posted in the web gradebook within 24 hours of the exam.

Grading

Your final grade for Physics 211 will be based upon your total score on all the components of the course. The total possible score is 1000 points, broken down as follows:

Prelectures+Preflights+Lectures	100
Homework+Discussion	250
Labs	150
Hour exams (100 each)	300
Final Exam	200

The breakdown of total points versus course letter grade will be approximately:
A+ (950), A (920), A- (900), B+ (880), B (860), B- (835), C+ (810), C (780), C- (750), D+ (720), D (690), D- (610), and F (<610).

Note that we will NOT use the common 90/80/70/60 breakdown for letter grades; the cutoffs are generally higher. The reason for this is that for some parts of the course the average score is typically very high. For example, there is no reason you should not be able to score 100% on your web based homework and Pre-Flight assignments. You should also be able to do very well on Labs and Quizzes.

Prelectures+Preflights+Lectures:

There will be 28 lectures (1 pt) , each with a corresponding prelecture (2 pts) and preflight (1pt). So if you completed all of these activities, they would add to a total of 112 points (12 points more than the maximum allowed). This is so that if you are sick, have a conflict, or just forget, you can miss a few of these activities without any penalty in your grade. We do not give EX's for these course components. In addition to the 4 points/lecture listed, you may also earn up to 1 "bonus" point per lecture based on the fraction of the ACTs that you answer correctly during that lecture. These bonus points will be added to your Homework/Discussion score.

Homework+Discussion:

There will be 14 homework sets and 9 quizzes, for a total of 23 equally-weighted scores. Your lowest score from this group of 23 will be dropped to determine your combined "homework/quiz" grade. Once this score is computed, your bonus points from lecture will be added, up to a maximum score of 250 points. So if you had an average homework/quiz score of 90%, and 15 bonus points from lecture, your Homework/Discussion score would be .9 x 225 + 15 = 240.

Labs:

All 8 lab scores will be used in calculating your total lab points at the end of the semester. (No lab scores will be dropped.) Scores used in this calculation will be adjusted to compensate for grading differences among lab section instructors.

Gradebook:

You will be able to view your grades on all components of the course using the course gradebook, which is accessible from the homepage. During the semester, you should check that your lab and quiz grades are correctly entered in the gradebook; any problems here should be brought to the attention of your section instructor immediately.

Final Exam:

The final exam will be two hours in length and will cover material from the whole semester. The final exam will be rom 10:30 to 12:30 on Friday, August 6, 2010

All questions about your course letter grade should be directed to the main lecturer.

Absences and Excused Grades:

There will be no make-ups for missed exams, quizzes or laboratory work in Physics 211. Unexcused absences from hour exams or quizzes will receive a score of AB, which is numerically equivalent to zero. Similarly, prelabs or lab reports that are not turned in at the time they are due and in the lab section for which you are registered will be scored AB, unless an excused absence is granted.

An excused absence from an hour exam will receive the score EX. At the end of the semester, hour-exam EX scores will be replaced by a weighted average of all of your non-EX scores on exams (hour exams and final exam). Similarly, an excused absence from a quiz will receive an EX and such scores will be replaced by the semester average of all non-EX quiz scores. EX scores for prelabs and lab reports will be treated in a similar manner.

Typically, EX scores for exams, quizzes, prelabs and lab reports will be granted only in one of the following circumstances: (a) illness; (b) personal crisis (e.g., automobile accident, required court appearance, death of a close relative or friend, weather conditions preventing travel to campus); or (c) required attendance at an official UIUC activity (e.g., varsity athletics, band concert).

In case (a), go to the McKinley Health Center. After you have been seen, you will receive a Visit Confirmation note that you should take to the course secretary in 231/233 Loomis. (Do not take it to an instructor.) She will make a a photocopy of the note for the course record book and will distribute copies to all of your instructors (lecturer, discussion TA, and lab TA). You may choose instead go to a private physician and obtain a written excuse. That excuse should contain your doctor's name and telephone number. Take the excuse note to the course secretary for recording, confirmation, and notification of your instructors.

In case (b) contact the Dean of Students' Office 333-0050. (At night this number is referred to as the Emergency Dean). The Dean's Office will subsequently send you a letter and a copy to the course secretary. She will place it in the course record book and send copies to all of your P211 instructors.

In case (c) inform your lecturer in advance that you will be missing an hour exam and request an I score. Similarly, inform your discussion TA if you will be missing a quiz or your lab TA if you will be missing a laboratory session. In addition, obtain a written note of confirmation from an official of the sponsoring office and take that note to the course secretary for recording and distribution to all of your instructors. Alternatively, request that the note be sent directly to the course secretary in 231/233 Loomis.

If you miss an hour exam for any reason, contact your lecturer and describe the circumstances. He or she will consider the merits of your case and determine whether an I score is justified.

If you miss a quiz or fail to turn in a prelab or lab report for any reason, contact your TA for that activity and describe the circumstances. Your TA will typically consult with one or more members of the course faculty before deciding whether an I score is justified.

If you fail to take a regular or conflict final exam in Physics 211, you will receive an ABS letter grade for the course, which will be interpreted as a failure (F) in your semester grade report. Permission to change an ABS letter grade to an I letter grade can only be granted by an authorized member of the Dean's Office of your college. If an I grade is granted, you must take a replacement final exam before the deadline specified in UIUC Code of Policies and Regulations Applying to All Students.