Class #1 – Intro, print

What will I learn?

The short version:

  • How to write computer programs with python

  • How to write programs to solve problems

  • A little bit of how computers work

  • A little bit about what on earth computer science actually is

  • How to be a 21st century individual so you won’t be left behind

The long version:

_images/turing.jpg

What prerequisites do I need?

  • Curiosity

  • A desire to learn a powerful new skill

  • A desire to distinguish yourself from peers in your discipline

Activity

Where have you encountered computer programs before?

Can anyone name an area of Science where they think having computer programming skill would be a bad thing? How about Social Science? Humanities? Art? Work with your neighbours.

Why are the course notes a website?

  • You’re going to learn to program with Python

  • A nice thing about Python is that it has a vast collection of libraries to do useful things

  • Most of those libraries are documented with something called Sphinx

  • The course notes are made with Sphinx

  • The idea: get used to reading material in this format. It’ll be useful to you

  • Here’s an example

  • Moodle will be used for announcements and assignment submissions

There are two sections?

  • Yes

  • Section 11 is in person and will be a typical class

  • Section 12 is online and asynchronous
    • You learn on your own

  • I will make every attempt to record all lectures and post them to YouTube

How will this class work?

This class is going to be run somewhat differently from other courses you may have experienced at university. We’re going to be using a somewhat, kinda’ “partially flipped” classroom, with a “microlecture” format and lots of in class hands-on time.

There are a few reasons for this:

  • It’s been demonstrated that students from classes using the microlecture/work format outperform students from traditional lecture classes. The students are also report being happier and more engaged

  • Listening to a lecturer droning on for two hours isn’t very engaging

  • You get better value for your tuition dollar (what can a lecture give you that a Khan academy video or a textbook can’t?)

A standard class works like this:

  • I lecture for one hour

  • You get bored 10 minutes in and start thinking about products you might like to buy on Amazon or what you’re going to watch on Netflix when you get home.

  • I keep going

  • You keep daydreaming…

Our class will work like this:

  • You’ll be offered suggested readings every week

  • You do the reading (or not, your choice… although I really really recommend it)
    • People that actually do the readings typically get 90+ in the course

  • You check out the YouTube videos

  • I give a short microlecture on a topic from the readings

  • I give the class a problem to solve, based on the microlecture

  • You work with your neighbours in class to solve the problem

  • I walk around and interact with the class. Answering questions, giving pointers, etc.

  • I depend on YOU to interact with me. I will need your help throughout the lectures

  • We repeat this process until the time is up for the day

We’ve already done this once already, but let’s try it again:

Activity

Have a chat with the people sitting around you:

  • What are their majors?

  • Why did you come to StFX?

  • Why are they taking this class?

  • What do you hope to learn?

  • How do you think you will use what you learn in the future?

What should I bring to class

  • Curiosity

  • Readiness to do stuff, rather than just listen

  • A laptop (if you want) or …

  • … a smartphone (Android and iOS devices have Python interpreters available) or …

  • … pen and paper (the weapon of choice of some of the greatest programmers in past generations)

Just to be crystal clear: you do not need to bring a laptop to class. If you have one, though, and you’re keen to get the most out of the class, it’s worth considering.

Is this class easy?

Quick Activity

  • Who here knows how to use a hammer?

  • Who knows how to use a screwdriver?

  • Who knows how to use a saw?

  • Who here knows how to build a house?

Each of the things you will learn are somewhat simple on their own, but using them together to achieve something is challenging.

These topics really are going to be shockingly different from what you are probably used to. Very few classes can prepare you for the way of thinking that will be required for this class.

Unfortunately, intro to CS classes do often have an unusually high fail rate.

So I should be terrified?

No. Really really no. It’s actually not that bad, but you should be prepared to be challenged (but that’s why we’re all here, right?).

Real waring though: The class is dense and very accumulative, do not fall behind!

The good news is, you get to make mistakes. Most of this class will be you beating your head against your keyboard until you get it right. Not many classes or disciplines give you this luxury.

I really can’t stress this enough. Most of the time when you’re working on the course material you will be getting things wrong. The majority of programming is actually debugging. Get used to making mistakes. This is a good thing. This is normal.

I need help!

OK, cool. You probably will. If you feel like you’re having a hard time, you’re not special — everyone runs into difficulties!

_images/beforeGoogle.jpg

There are A LOT of resources to help you. We have Google, YouTube videos, email, Google, office hours, labs, Google, Google, etc.

Why did you just say Google so many times?

When a programmer isn’t debugging, they’re Googling their problems. This is so common that you can find an insane number of memes making fun of this.

I am going to tell you to “Google It” very often in this course. This is intentional. Independent learning is one of the most important things you will learn at university. Further, it will be your go to tool when you’re programming in the future. Get used to “Googling it”.

_images/Googling.jpg

Can I write a program now?

Yes. Load up Python, and type this:

print("Hello, world!")

Wait… wut?

All cool?


  • Go back and run the “Hello, world!” program.

  • You’re now officially a computer programmer!

_images/HelloWorldColab.png

Videos

  • Be sure to check out these YouTube videos!

  • WARNING:
    • These videos are not a substitute for lecture or the course notes. They are supplementary.

    • These videos were NOT created for this course, but a similar class, so they’ll probably be handy

    • These videos are using the local interpreter. You will not see any Colab in them. They will still be super useful though.

    • These videos were made for Python 2 (but that won’t really matter for you. Most you’ll have to deal with is adding brackets to the print statements.)





For next week