## Mike Bailey's Scratch Page

### http://cs.oregonstate.edu/~mjb/scratch

Latest update: November 12, 2021

NEW! Notes on using Scratch Junior!

### Step #1: Open Scratch in a browser:

https://scratch.mit.edu/projects/editor

### Step #3: Watch this video:

https://media.oregonstate.edu/media/t/0_29e156h7

### Full Notes:

Warning! I was once asked to put on a 3-day Scratch class for some public school teachers. They were so inquisitive that I had to develop lots of materials. That's why there are over 100 pages of notes here. Don't feel like you need to go through all of them.

And, BTW, I haven't yet updated all the notes to Scratch 3.0. But, you will have no trouble doing things in Scratch 3.0 from these notes.

Scratch notes (one slide per page)
Scratch notes (two slides per page)

### Raining Cats-and-Dogs Game:

The game itself: CatsAndDogsTouch.sb3 for a touch screen system

### Breakout Game:

Writing a Breakout Game -- 1pp
breakout.sb2 -- the game itself

### Maze Game:

Writing a Maze Game -- 1pp
maze.sb2 -- the game itself
Experiments to try with the maze program

### Scratch Files used in the Notes:

 cat.running.laps.sb Simple cat animation clone.sb2 Example use of cloning in Scratch 2.0 color.square.sb Fun concentric-square pen plotter draw.a.circle.sb Drawing a line circle kinematics.sb Forward kinematics limacons.sb Drawing Limacons ("snail") curves lissajous.sb Lissajous pattern curves orbit.sb Orbital Mechanics particles.sb2 A 2D particle system polar_rose.sb A polar rose curve polar_tulip.sb A polar tulip curve projectile.sb Projectile motion spiro.sb A Spirograph -- change the parameters and hit the space bar to redraw stamp.sb Using the stamp command threed.sb2 Attempting to emulate 3D rotation where.in.hawaii.sb ChromaDepth Hawaii where.in.oregon.sb ChromaDepth Oregon where.in.the.world.sb ChromaDepth World

### Background Image Files used in the Notes:

 ca.jpg ChromaDepth California hawaiimap.jpg ChromaDepth Hawaii mars.jpg Mars, showing Valles Marineris and Olympus Mons oregonmap.jpg ChromaDepth Oregon usa.jpg ChromaDepth USA worlde.jpg Earth, eastern hemisphere worldmap.jpg ChromaDepth Earth worldw.jpg Earth, western hemisphere

### Other Stuff

Here's notes on some other fun non-Scratch things: