🎟️ Intro to App Lab Exit Ticket

Which features are specifically mentioned as tools students can use in App Lab?

• Buttons, text, images, sound, and screens

• Spreadsheets and slide decks

• 3D printing and laser cutting

• Email and web browsing

Which App Lab block lets you change an element’s properties like text, color, or image?

• onEvent()

• setProperty()

• playSound()

• updateScreen()

What is the recommended way to find an element’s ID in App Lab?

• Guess based on the element’s color

• Hover over the element to read its ID

• Open a separate ID list in settings

• IDs are not needed for setProperty()

Which statement about onEvent() is correct?

• You should nest one onEvent() block inside another

• Use multiple onEvent() blocks for the same element and same event

• You can add multiple code blocks inside a single onEvent() to make several things happen

• onEvent() can only handle clicks, not other events

To add a picture to a screen element, which property do students use with setProperty()?

• "url"

• "image"

• "srcImage"

• "picture"

If clicking a button doesn’t trigger your code, which troubleshooting step from the guide should you try first?

• Change the button’s color

• Check the "id" value used in onEvent() to make sure it matches the element

• Add another onEvent() for the same element and event

• Delete all events and start over

In App Lab’s Design Mode for levels 10–13, why are good element IDs important?

• They make the app change colors automatically

• They help you name and reference screen elements clearly in your code

• They add more screens without coding

• They allow apps to share themselves online

The ​ (a)   of ​ (b)   will ​ change to pink when you ​ (c)   ​ (d)   . ​

• text-color
• button1
• blue
• press
• click