1. Imperative programming

Week 1 (August 25)
Due: 1.1. Turtle lab

👋 Welcome to LAI 676!

Notes

Hello, welcome!
About me
Goals for the course
- content knowledge (learning CS)
- pedagogical content knowledge (learning how CS is learned and taught)
Hardware
- Need a real computer
Structure
- Units, labs, problem sets
- Weekly small group meetings
- Weekly lectures
- Weekly journal
How to get help
- email me
- attend office hours with Varun (will send out survey soon)
- ask at your small group meeting
- ask in the discord
AI - try to avoid... remember, one of the goals is to learn to code!
Review the syllabus

💻 Do Now

Make sure you have a computer you can use for the course
Join our class Discord server
- Introduce yourself on Discord in the #general channel
- Find a group who can all meet at the same time in-person or virtually
Get set up
Work on the Turtle Lab
- due by next Monday
Create a journal document and share it with me (eqbrown@buffalo.edu)
Optional: Install Oh My Zsh for a more readable, colorful Terminal

Setup

This video guides you through the setup instructions.

Your username is your UB username - mine would be eqbrown. Your password is the first letter of your UB username and your UB ID number - for example e00234.

Turtle Lab

This video walksthrough the Turtle lab. Feel free to watch the video or follow along with the text.

A few extra Turtle Commands

Function	Input	Example Use	Explanation
forward	amount	`forward(100)`	Moves the turtle forward by the specified amount
backward	amount	`backward(100)`	Moves the turtle backward by the specified amount
right	angle in degrees	`right(45)`	Turns the turtle clockwise by the specified angle
left	angle in degress	`left(45)`	Turns the turtle counter clockwise by the specified angle
color	colorname	`color('red')`	Sets the color for drawing. Use "red", "black", etc. Here's a list of all the colors.
speed	number from 0-10	`speed(0)`	Determines the speed at which the turtle moves around the window. 1 for slowest, 3 for normal speed, 10 for fast, 0 for fastest.
pendown	None	`pendown()`	Puts down the turtle/pen so that it draws when it moves
penup	None	`penup()`	Picks up the turtle/pen so that it doesn’t draw when it moves
pensize	width	`pensize(4)`	Sets the width of the pen for drawing
setheading	angle	`setheading(90)`	Sets the pen to the 0th degree
circle	size	`circle(10)`	Sets the radius of the circle
goto	x, y	`goto(90,0)`	Moves turtle to a given coordinate
begin_fill	None	`begin_fill()`	Marks the start of the color fill
end_fill	None	`end_fill()`	Marks the end of the color fill
fillcolor	colorname	`fillcolor('purple')`	Sets the color of the fill