1. PROGRAMMING CONCEPTS AND SKILLS SUPPORTED IN
In the process of creating interactive stories, games, and animations with Scratch, young people
can learn important computational skills and concepts.
PROBLEM-SOLVING AND PROJECT-DESIGN SKILLS
FUNDAMENTAL IDEAS ABOUT COMPUTERS AND PROGRAMMING
SPECIFIC PROGRAMMING CONCEPTS
Concept Explanation Example
To create a program in Scratch, you when space key pressed
go to x: -100 y: -100
the order of steps. glide
say
2 secs to x:
Let the show begin!
0 y: 0
for secs
play sound fanfare until done
iteration (looping) forever and repeat
for iteration (repeating a series of
instructions)
conditional statements if and if-else check for a condition. if x position > 200
set x to -200
wait .01 secs
e variable
lists (arrays) e list
strings. is kind of data structure
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2. Concept Explanation Example
event handling when key pressed and when
sprite clicked when left arrow key pressed
handling – responding to events point in direction -90
move 10 steps
of the program.
threads Launching two stacks at the same
time creates two independent
coordination and broadcast and when I receive can
winner when this condition is met:
synchronization coordinate the actions of multiple
wait until score > 100
sprites. Using broadcast and wait
broadcast
allows synchronization. winner
is script in Sprite2 is triggered when
the message is received:
when I receive winner
play sound cheer
say You won the game!
ask and wait prompts users to type.
answer
pick random selects random set x to pick random -100 to 100
integers within a given range.
boolean logic and, or, not
logic.
dynamic interaction mouse_x, mouse_y, and loudness
user interface design You can design interactive user
PROGRAMMING CONCEPTS NOT CURRENTLY INTRODUCED IN SCRATCH:
return values
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