App Basics
The two environments in MIT App Inventor are the Blocks editor and this one.
What is the Designer
This invisible container lines components up in a row or a column so a screen doesn't look scattered.
What is an Arrangement
This is a single variable that holds many values in order, like Item 1, Item 2, Item 3.
What is a list
This is the name of the AI tool used to compose original background music from a text prompt.
What is Wondera.ai
This is the kind of testing where the builder tries out their own app while it's being built.
What is builder testing
This tool acts as a stand-in phone on your computer so you can test apps without a physical device.
What is an emulator (Android Studio)
This term describes how an app FEELS to use, easy, confusing, or clear, as opposed to what it looks like.
What is UX (User Experience)
This kind of variable is created once and can be used by any component, procedure, or screen in the app.
What is a global variable
This component shows a fillable bar on screen that gets nudged up using IncrementProgressBy.
What is a Progress Bar
This is the kind of testing where someone unfamiliar tries the app for the first time to catch confusing moments.
What is user testing
This programming style means your code waits for something, like a tap, before it runs a response.
What is event-driven programming
Set an Arrangement's Width to this value so it stretches all the way across the screen.
What is Fill Parent
This block lets code make a decision, running one set of instructions if something is true, and a different set if it's false.
What is an if/else block
MIT App Inventor splits audio into two components: this one for short effects, and Player for longer background music.
What is Sound
Name one of the three things that turn a working app into a polished one: consistent colors, readable fonts, or this.
What are clearly labeled buttons
This is the file type you download and drag onto your emulator to install and test your app.
What is a .apk (Android App package)
These two Arrangement properties control where components sit left-to-right and top-to-bottom.
What are AlignHorizontal and AlignVertical
This is the term for a procedure that calls itself to repeat an action until a condition is met.
What is recursion
This Clock property, measured in milliseconds, controls how often the timer fires.
What is TimerInterval
This is the three-question feedback framework: what worked, what was confusing, and this.
What is one specific suggestion
Built-in blocks like Text and Colors work everywhere, but this other kind of block only shows up in the drawer of the specific component it belongs to.
What are component (design-based) blocks
This panel lets you customize how a selected component looks and behaves, like its color, size, or visibility.
What is the Properties panel
Instead of typing a number by hand, this block grabs the number of items in a list automatically.
What is the length of list block
A good music prompt should describe mood, genre, and tempo, plus this optional fourth detail.
What are instruments
Two lists like Questions and Answers must be built in this same arrangement, so item 3 in one always matches item 3 in the other.
What is the same order (parallel order)