1) The document outlines lessons from the first day of a Scratch programming camp, introducing concepts like what programming is, why learn to program, and how Scratch allows anyone to program without complicated syntax. 2) Students are guided through experiments with the Scratch interface and programming blocks to create simple programs and scripts. Concepts taught include statements, Boolean expressions, conditions like if/else, and loops. 3) Later lessons cover variables, threads, and events, using examples like a counting program and a copter game to demonstrate programming concepts. Students are assigned in-class and homework projects to apply the concepts.

1. MAGIC CAMP/ Summer 2018/DAY 1 (Credit for Patrick Woessner)
Programming with
Scratch
Lesson 1: Intro to Programming
D
A
Y
1
1

2. Computer Programming?
● What is programming?

● The process of writing, testing, and maintaining the
source code of computer programs.
Telling the computer what to do
● Why learn to program?



Develops logic and problem-solving skills
Improves attention to detail
It’s fun!
D
A
Y
1
2

3. Anyone Can Program!
● New tools, like Scratch, allow ANYONE to create
computer programs without learning complicated
syntax.
D
A
Y
1
3

4. Programming with Scratch
START HERE
❑ Go to the Scratch website:
http://scratch.mit.edu
❑ Sign into your account.
❑ Click on the “Create” tab located at the
top left of the browser to start a new
project.
❑ Time to explore! Try clicking on
different parts of the Scratch interface
to see what happens.
❑ Play with different Scratch blocks!
Drag and drop Scratch blocks into the
scripting area. Experiment by clicking
on each block to see what they do or
try snapping blocks together.
D
A
Y
1
4

5. D
A
Y
1
5

6. In Class Assignment 1
● After introducing the Scheme of Scratch, students
will start with step-by-step projects on
https://scratch.mit.edu/projects/editor
● Students will try to experiment and explore a
dance video by the help of instructors and step-
by-step project guideline “Getting Started with
Scratch”.
D
A
Y
1
6

7. MAGIC CAMP/ Summer 2018/DAY 1 (Credit for Patrick Woessner)
Programming with
Scratch
Lesson 2: Scratch Syntax Part 1
D
A
Y
1
7

8. Statements
● In programming, a statement is simply a directive
that tells the computer to do something. Think of it
as a command or an instruction.
● In Scratch, any block whose label reads like a
command is a statement.
D
A
Y
1
8

9. Boolean Expressions
● Sometimes, you only want a statement to be
executed under certain conditions. Such
conditions are defined in terms of Boolean
expressions.
● In programming, a Boolean expression is an
expression that is either true or false. In Scratch,
any block shaped like an elongated diamond is a
Boolean expression.
D
A
Y
1
9

10. Boolean Expressions
● One such block is:
After all, it is either true that the mouse button is
down or it is false.
● Another such block is:
After all, it is either true that some number is less
than another number or it is false.
● With Boolean expressions can we construct
conditions.
D
A
Y
1
10

11. Conditions
● In programming, a condition is something that
must be true in order for something to happen.
● A condition is thus said to "evaluate to true" or
"evaluate to false."
● In Scratch, any block whose label says "if,"
"when," or "until" is a sort of conditional
construct.
D
A
Y
1
11

12. Conditions
● If Construct: Instruct a sprite to say hello only
if, say, the user has depressed the mouse
button:
● If-Else Construct: Instruct a sprite to say hello or
goodbye, depending on whether the user has
depressed the mouse button:
D
A
Y
1
12

13. Conditions (In Class Assignment)
● If-Else Construct: Write an instruction to instruct a
sprite to react when the spirit is touched by mouse
D
A
Y
1
13
Steps:
1 - Choose a sprite from the sprite library or upload your own sprite.
2-

14. Conditions
● When Construct: Instruct a sprite to do
something when an event occurs:
● When Construct: Instruct a sprite to wait to
do something until a condition is true:
D
A
Y
1
14

15. Loops
● In programming, a loop can induce multiple
executions of statements.
● In Scratch, any block whose label begins with
"forever" or "repeat" is a looping construct.
D
A
Y
1
15

16. Loops (In Class assignment)
D
A
Y
1
16
Follow me

17. MAGIC CAMP/ Summer 2018/DAY 1 (Credit for Patrick Woessner)
Programming with
Scratch
Lesson 3: Scratch Syntax Part 2
D
A
Y
1
17

18. Variables
● In programming, a variable is a placeholder
for some value, much like x and y are popular
variables in algebra.
● In Scratch, variables are represented with
blocks shaped like elongated circles,
uniquely labeled by you.
D
A
Y
1
18

19. Variables(In Class Assignment)
D
A
Y
1
19
2 - Change Count Sprit to count only in odd
numbers.
3 - Change Counter Sprit to count only in even
numbers.

20. Variables(In Class Assignment)
D
A
Y
1
20
4- This script alternates costumes and sounds.
Modify it so that it has a meow sound and
costume after odd numbers and a dog sound
and costume after even numbers.

21. Threads
● In programming, a thread is like a mini- program within
a program that can execute at the same time as other
threads.
● In Scratch, any block whose label begins with "when"
essentially marks the start of a thread.
D
A
Y
1
21

22. Events
● An event is a signal from one thread to
another.
● Blocks whose labels begin with "broadcast"
signal events whereas blocks whose labels begin
with "when" handle events.
D
A
Y
1
22

23. Copter Game Flight Code
D
A
Y
1
23

24. Copter Game—One Level
D
A
Y
1
24

25. Adding a Level
● Levels can be added using threads and
events.
D
A
Y
1
25

26. Homework
● Complete Your First Game Project
● You may wish to use the Copter Game and
Levels program as resources.
● Completed projects need to submitted to the
MAGIC CAMP website by the due date.
D
A
Y
1
26