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mjb – March 21, 2020 Computer Graphics
1
Scratch !
Mike Bailey [email protected]
mjb – March 21, 2020 Computer Graphics
2How Can You Get Scratch 3.0 for Free?
Use the web browser-based version of Scratch 3.0 at:
https://scratch.mit.edu/projects/editor
You can also get an installable version of Scratch 3.0 at:
https://scratch.mit.edu/download
Thanks to the Massachusetts Institute of Technology for developing Scratch and keeping it free!
mjb – March 21, 2020 Computer Graphics
3You, As A Computer To Be Programmed
In this exercise, you are a computer and I am the programmer.
I will give you instructions and you carry them out.
If I tell you to do it, then you do it.
If I don’t tell you to do it, then don’t do it.
Ready? Set. Go.
mjb – March 21, 2020 Computer Graphics
4
Stand Up Raise Your Left Hand
Put Your Right Hand on Top of Your Head Turn Around One Circle
Put Your Hands Down Sit Down Smile !
Meow Like a Cat Count to 2
Repeat 3 Times
mjb – March 21, 2020 Computer Graphics
5 What Kind of People Need to Tell the Computer Where to Put Things?
mjb – March 21, 2020 Computer Graphics
6
X
Y Left-Right is called “X”
Bottom-Top is called “Y”
mjb – March 21, 2020 Computer Graphics
7
X
Y
100 200
100
X=200, Y=100
mjb – March 21, 2020 Computer Graphics
8
X
Y
100 200
100
X=?, Y=?
mjb – March 21, 2020 Computer Graphics
9
X
Y
-100-200
-100
X=-200, Y=-100
mjb – March 21, 2020 Computer Graphics
10
X
Y
100 200
100
-100-200
-100
mjb – March 21, 2020 Computer Graphics
11 Scratch Screen Layout
Script Area
“Stage” (i.e., the scene)
Commands in Categories
Sprite Manipulation
The Sprite “Locker Room”
Run your Program!
New Background Selection
New Sprite Selection
Code, Costumes, Sound Tabs
mjb – March 21, 2020 Computer Graphics
12 Drag-and-Drop Puzzle Pieces
mjb – March 21, 2020 Computer Graphics
13 Drag-and-Drop Puzzle Pieces
mjb – March 21, 2020 Computer Graphics
14Make an Animation of Your Own!
mjb – March 21, 2020 Computer Graphics
15Make an Animation of Your Own!
mjb – March 21, 2020 Computer Graphics
16Bring in More Actors!
mjb – March 21, 2020 Computer Graphics
17Bring in a Background!
mjb – March 21, 2020 Computer Graphics
18 Bring in More Sounds!
mjb – March 21, 2020 Computer Graphics
19 Play More Sounds!
mjb – March 21, 2020 Computer Graphics
20 Effects!
mjb – March 21, 2020 Computer Graphics
21 Effects!
mjb – March 21, 2020 Computer Graphics
22 Seven Different Effect Types!
