Lesson 1 Unit Assessment App Creators

To add a button to a screen in App Inventor, where would the Button component be dragged to?

• The Designer Viewer

• The Blocks Viewer

• The Properties Pane

• The Media Drawer

To program a Button component in App Inventor, where would the code be added?

• The Designer Viewer

• The Blocks Viewer

• The Properties Pane

• The Media Drawer

Use the image to answer the question.

Which of the following algorithms would move the arrow from the Start block, through the grey outlined path on the maze, to the End block? Note that the turnLeft and turnRight turn the arrow in place – they do not advance the arrow forward!

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Which of the following event handlers will play an audio file when a check box is clicked in App Inventor?

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Use the code in the picture to answer the question.

Which of the following statements correctly describes the event for the event handler shown above?

• A button being clicked.

• The app speaking the message "I'm shaking!"

• The accelerometer sensing shaking.

• The app displaying the message I am shaking.

An app developer wants to create the code for a checkbox component that when selected (checked), turns a label component’s background color to red; when not checked turns the label component’s background color to blue.

Which of the following flowcharts is the correct way to show the algorithm for this behavior?

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An app developer wants to create the code for a checkbox component that when selected (checked), turns a label component’s background color to red; when not checked turns the label component’s background color to blue.

Which of the following flowcharts is the correct way to show the algorithm for this behavior?

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What does UI stand for?

• Universal Identifier

• User Interface

• User Identification

• User View

What kind of question can a conditional statement be?

• multiple choice

• long answer

• short answer

• yes/no

An If/Then statement uses

• Boolean logic

• Common sense

• Complex equations

• Strategic planning