Grade 3 · Technology · Lesson 31

Coding Events: Triggers and Responses

In Scratch, an event is something that happens to start or change a program. Events are triggers — they are the "if this happens" part of a rule. When an event occurs, the connected script (the response) runs. Events make programs interactive because they let the program react to what the user does.

What this lesson teaches

1Explain what an event is in Scratch and give three examples of event triggers
2Match each Scratch event trigger to the response it causes in a program
3Describe how events make programs interactive by responding to user actions

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