CS 101

Today’s class will start 5 minutes late

CS 101Introduction to Computer Science

Aaron BloomfieldUniversity of Virginia

Spring 2007

3

Who we are

Aaron Bloomfield: CS 101 Office: Olsson 228D Office hours will be posted

on the website Email:

Michele Co: CS 101-E Office: Olsson 228A Office hours will be posted

on the website Email:

4

Who they are

Both instructors also accept appointments We have 16 undergraduate teaching

assistants And 1 graduate teaching assistant Their information and hours will be posted on the

website

5

What this course is

An introduction to programming using Java

An introduction to theoretical problems in computer science We’ll start seeing these next time

6

What this course is not

We do not talk about (in any depth): Applications of computing Other programming languages (C, C++, Matlab,

etc.) History of computing (well, not much) How to use Microsoft office or create a web page

7

Course objectives

Understand fundamentals of programming such as variables, conditional and iterative execution, methods, etc.

Understand fundamentals of object-oriented programming, including defining classes, invoking methods, using class libraries, etc.

Gain exposure to the important topics and principles of software development.

Have the ability to write computer programs to solve specified problems.

Be able to use a software development environment to create, debug, and run programs.

8

Honor Policy

Honor Policy: The University of Virginia Honor Policy is in effect in this class. As a student in the course you also agree to follow the following principles.

Unless otherwise specified, the only allowed collaboration for the homeworks and labs is the discussion of ideas; no collaboration is allowed on the exams and lab quizzes.

No code or solutions are to be distributed to other students either electronically (i.e. e-mail) or on paper. If you are looking at another student's code, you are in violation of this honor policy.

Unless otherwise noted, exams and individual assignments are pledged: you promise that you have neither given nor received unauthorized help.

When there is doubt regarding the honorability of an action, you will ask before doing it.

9

Honor Policy

Honor Policy: The University of Virginia Honor Policy is in effect in this class. As a student in the course you also agree to follow the following principles.

You are not allowed to describe problems on an exam or quiz to a student who has not taken it yet. You are not allowed to show exam papers to another student or view another student's exam papers while working on an exam.

You are not allowed to debug your fellow student's code – there is ample teaching assistant support, and they can help debug code. This will be discussed in more detail once we start getting into writing (and debugging) Java programs.

You may not use another students 'clicker' during lecture (we will be discussing clickers shortly).

10

Honor Policy

If you find yourself looking at somebody else's code, and doing such was not explicitly allowed, then you are in violation of this policy!

Any honor violation or cheating will be referred to the honor committee, and will result in an immediate failure for the course, regardless of the outcome of the honor trial or your other grades.

No exceptions!

11

Website

At http://www.cs.virginia.edu/~cs101 The syllabus is there (with most of the info in

this slide set) And all the lecture notes

I will try to post all slide sets on the website the night before lecture But will probably be editing them that day

Don’t bother writing down what’s on the slides!

There will also be videos of 101 lectures

12

Textbook

Starting Out with Java 5 from Control Structures to Objects

Tony Gaddis

We’ll be covering the first 6 chapters and chapters 8 and 9

This is not the same textbook that was used last semester!

13

Clickers

These are RF “remote controls”

Allow me to ask questions during class and get responses from everybody

Very useful in large lecture halls…

The bookstore has them (or will shortly)

It is required: there will be a grade penalty if you do not get one

14

Keeping the class interesting

Humor breaks Actually helps with attention span! Not surprisingly, most of it will be computer

humor!

1515

Motivational postersMotivational posters

1616

Today’s demotivatorsToday’s demotivators

17

Grading criteria

10% – Laboratory participation However, if you miss more than 2 labs, you are subject to

failure for the course More on this in a bit…

10% – Laboratory programming quizzes 30% – Homework assignments 30% – Midterms

21 February, 28 March, 25 April 20% – Final exam

Scheduled time is Friday, 4 May from 7 pm. to 10 pm We will discuss conflicts as the semester progresses

APMA 310, MATH 111, 114, 121, and 122, and STAT 110 Will be following the standard 10-point curve scale

18

Grades

All grades will be kept online Viewing your grades will be gone over in the first

lab All electronically submitted assignments

(labs, HWs, lab quizzes) will be graded electronically They are still graded by a human, of course You will receive an e-mail about your grade

Only the exams will be graded via paper

19

Grading critera

We reserve the right to modify the weighting, especially if attendance drops off significantly

Any such change will be announced in lecture

20

Regrades

When an assignment is graded, the grading guidelines will be posted

If you feel you deserve more credit, you need to submit a regrade Paper-based for the exams Electronically for labs, HWs, and lab quizzes

Regrades must be submitted within 10 (ten) days

More on regrades in the first lab We reserve the right to possibly institute a

“penalty” on “whiny” regrades

21

Homeworks

These are programming homeworks We estimate 9 or so of them Are due at 10 a.m. on Friday Late policy:

1 second late to 24 hours late: -25% 24 hours and 1 second late: -100%

22

Labs

Will have one each week Total of 11 (or so) throughout the semester

Lab attendance is REQUIRED If you miss more than 2 labs, you are subject to course

failure for the course If you show up to a different lab section without

permission, it counts as missing that lab There ARE labs this first week

Lab grading will be discussed in the first lab If you don’t finish the lab during lab period, you can finish it

within the next 24 hours More details on this in the first lab

If for a valid reason you are unable to do your lab, there will be a make-up lab on Sunday night, provided that you get permission prior to your scheduled lab

23

Lab scheduling problems

I expect about some students will switch into CS 101-E Using last spring semester as a guide

That will free up space in all the lab sections I then have to course action in the lab section 10

people

We will get everybody registered for a lab section that fits their schedule

If you are not registered for a lab section this week, you can go to any lab But only if you aren’t registered for any lab section!

24

Exams

There will be three midterms, all pledged 21 February, 28 March, 25 April (all are Wednesdays)

There will be three lab quizzes, all pledged During lab sections the week of the midterms

The tests are going to be hard! Final exam

Scheduled time is Friday, 4 May from 7 pm. to 10 pm We will discuss conflicts as the semester progresses

APMA 310, MATH 111, 114, 121, and 122, and STAT 110

25

Home directory service

All assignments and lab files must be kept on your home directory http://www.virginia.edu/homedir

26

My philosophy: hard but fair

Fairness is a challenge in a class of 375 students

If you feel something is not fair, you need to let me know I will do my best to correct it

If you think that this course is not hard, let me know I will do my best to correct it

27

Who to contact

I am not always the best person I easily get inundated with emails, as I have

hundreds of students The TAs can often answer a question just as

easily as I can, and much quicker There will be a dedicated graduate TA for grading

issues Any administrative requests should be e-

mailed to cs101@cs.virginia.edu, not the instructors or TAs Lab section switches, homework questions, etc. Anything that does not need to be answered by

the instructors

28

Office hours

Office hours will be posted on the website Note that changes to an individual week will be

posted there as well Please check it before you head off to office

hours! There will be a lot of TA office hours

We expect to provide over 50 office hours during a given week

Please utilize them!!!

29

Feedback

It’s a very good thing! Feel free to leave us feedback

Can be done anonymously, if you wish Via the Toolkit or the CS dept website

It’s hard for the instructors to know what the students think of the course…

30

Learning the material

There are a number of ways we provide to help you learn the material

Lecture Lecture videos Slides on the website Programming homeworks Labs Textbook Previous years’ tests TAs (during labs or office hours) Professors (office hours) Fellow students

Find what works best for you and use it

31

Sections

CS 101 Students have little or no programming experience Mandatory scheduled closed labs Meets three times a week (M/W/F 3:00-3:50)

CS 101-E Students with programming experience Open labs that are to be completed by a scheduled time Meets two times a week (M/W 2:00-3:15)

CS 101-X Is being run separately from 101/101-E

101 & 101-E students take same quizzes and tests, and do the same assignments

The 10-point curve is the same for everybody So helping your fellow students out does not hurt you

32

Differences with 101-E

Labs are done by all 101-E students on their own time If you miss more than 2, you are still subject to failure Labs due 8:30 p.m. on Sunday Optional lab session for 101-E students Sunday at 5 p.m.

Pace through the textbook is the same They may go through it in more detail, though

The following is assumed for students in 101-E You have taken a course in programming

Thus, you know the basics of programming You will need to sign a pledge stating this

You did not get a 4 or a 5 on the AB level AP computer science exam, or a 5 on the A level AP exam

33

Should you be in 101-E?

If you have had a semester’s worth of programming, then yes

Stay to the end of this lecture, then start going to the other section next time Meets in MEC 205