In this video, you will add two characters to your project, who will talk to each other to create your P-S-A.

You can pause the video to add to your project, or you can watch the entire video, then complete the steps.

To start program the dialogue between your two sprites.

Choose a character to speak, and select the Looks menu.

Click, hold, and drag out a few “say for 2 seconds” blocks.

Connect them.

When you click the block stack, the sprite says “Hello!”

Change the text to start your PSA.

What does your character say first?

Maybe it’s a question, like “Did you know that many animal species are endangered?”

Or a fact, like “The plastic in the ocean hurts animals like sea turtles.”

Next, program the other character to respond by adding “say” blocks.

Think about your second character’s personality.

How will they continue the conversation to build your PSA?.

Maybe they add facts, ask a question, or tell the audience to “act now!”

To make your PSA start when the flag is clicked, select the events menu… and add a “when flag clicked” block to the top of the block stack.

Do this for both characters.

The ‘when flag clicked’ event allows you to start or run the code without clicking the block stack each time.

This allows multiple characters and objects to perform actions at the same time, or without having to click on each sprite’s block stack. Test this.

Hmmm… Both characters talk at the same time.

The second character needs to wait before responding.

From the control menu, add a “wait” block and put it above the “say” blocks.

Change the value to “6 seconds” because the first character talks for 2..4...6 seconds.


Sequence additional “say” and “wait” blocks in your project.

If your characters’ phrases vary in length, edit the values in the “say” blocks to give them the right amount of time to speak.

You might have a bug in your program, like this.

Change the wait blocks to reflect the seconds value of the other character.

Test your code often to see if your PSA is working the way you want it!

When you’re ready, come back to this page to check out more ways to add to your PSA.

Choose an Add-On

Start here
Engage Supporters

Make two characters talk to one another about the issue you’ve chosen.

Weather or Confetti

Program confetti, snow, hearts, or other objects to fall from the sky.

Come on Stage

Program the main character to come on the stage with an animated motion effect.

Supportive Phrases

Program supporters to say supportive phrases from a list about your issue.

Speak Out

Make your character talk about the topic you’ve chosen.

Change Scene

Change the animation scenery by adding more backdrops.

Add Sound Effects

Choose or record sounds to accompany your project.

Include Supporters

Add or draw more characters who support your cause.

Move Around

Make your primary or secondary characters move to emphasize points in your story.

Question & Answer

Ask the audience a question and make something happen based on the response.

Add a Title

Create a title for your passion project so the audience can know what it’s about.

Change Costumes

Animate your characters by making them change costumes.

Make Some Noise, Use Your Voice

Make your own beat, or record your own voice.

Translate Messages

Share your message with audiences who speak other languages.


Para hacer esta actividad en español, haz clic aquí.


  1. Watch the introduction video.
  2. Open the starter project link below and add characters and dialogue.
  3. Return to this page and watch more videos below.