AC 1.3 App Layers

What are the three layers in an app?

• View layer

• Control layer

• Model layer

• Base layer

What does the view layer of an app do?

• It processes data from sensors

• It is the part users see and interact with

• It controls the app's speed

• It stores user information

In MIT App Inventor, what do we use to create the User Interface (UI) of the app?

• Blocks View

• Design View

How does the controller layer help an app?

• It adds more pictures to the app

• It tells the app how to behave

• It makes the app bigger

• It changes the app's color

What is the role of the model layer in an app?

• It adds sound effects

• It changes the app's language

• It processes data and information

• It displays images

What do computer scientists do before building an app?

• They understand what users want and need

• They start coding immediately

• They buy new computers

• They decide the app's color scheme