Events and Repeat Loops
🧩 ScratchStart projects with events and loop blocks with repeat and forever.
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Events Kick Everything Off
The Events palette starts your scripts. The green flag block when ▼ clicked is the most common start.
when ▼ clicked · when space key pressed · when sprite clicked · when I receive message
Loops Repeat Blocks
The Control palette has the loops:
repeat 10— run a fixed number of timesforever— keep running until stoppedwait 1 seconds— pause between actions
Dancing sprite:
when ▼ clicked → forever → move 10 steps → if on edge, bounce → wait 0.2 secondsSending Messages
Use broadcast hello to trigger other sprites. A sprite with when I receive hello will react. This is how you coordinate scenes and characters!
Challenge
Build a bouncing ball: green flag → forever → move 10 steps → if on edge, bounce → wait 0.1 seconds.
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