Lesson 1 of 0
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Using Broadcast
SCRATCH PROJECT
Using Broadcast in ScratchJr Projects
Broadcast is a coding block that sends a message from one character to another. When a character receives the message, it can perform an action—like jumping, speaking, or changing scenes.
Think of it like a walkie-talkie: one character says “Go!” and another hears it and starts moving.
1. Open ScratchJr
- Tap the ScratchJr app on your tablet or computer.
- Start a new project by clicking the home icon, then the plus (+) button.
2. Add Two Characters
- Tap the blue character button to add first and second character.
- You now have two sprites (characters) on your stage.
3. Add Code to the First Character
- Select the first character.
- Drag a trigger block (like the green flag or tap block).
- Add a Say block from Purples Blocks Section.
- Add a Broadcast block (yellow envelope icon).
- Choose a message color (e.g., red, blue, green).
4. Add Code to the Second Character
- Select the second character.
- Drag a When I Receive block (yellow envelope with arrow).
- Choose the same message color as the broadcast.
- Add action blocks (e.g., move, speak, jump).
5. Test Your Project
- Tap the green flag to run your code.
- Watch how the first character sends a message and the second one responds.
Tip for Students
Use characters that make sense together—like a cat and a dog or a teacher and a student.
Tip for Students
Try using Broadcast to switch scenes or start a group dance!
