78 lines
2.2 KiB
Markdown
78 lines
2.2 KiB
Markdown
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# rotating animation quiz
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Learn how to create a rotating image with a while loop. #image #loop #while #docs
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## Name
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## Directions
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Use this activity document to guide your work in the [rotating animation tutorial](/microbit/js/tutorials/rotating-animation).
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Answer the questions below while working on or after you finish the tutorial. Pay attention to the dialogs!
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## 1. What is a while loop?
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## 2. Consider the following directions
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Write the code to create a **global variable** called `rotating` and initialize it to **true**.
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## 3. Consider the following directions
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Write the code to create a **while** loop that will be executed only if the **global variable** called `rotating` is **true**.
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## 4. Consider the following code
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```
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basic.showAnimation(`
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# . . . . . . # . . . . . . # . . . . .
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. # . . . . . # . . . . . # . . . . . .
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. . # . . . . # . . . . # . . # # # # #
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. . . # . . . # . . . # . . . . . . . .
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. . . . # . . # . . # . . . . . . . . .
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`, 400)
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```
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If the rectangles below represents a board that is 5 LEDs wide and 5 LEDs tall, place an X approximately where the LED is lighted in the series. Explain why the LED is lighted there.
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******************************
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## ANSWER KEY
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## Directions
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Answer the questions below while working on or after you finish the tutorial.
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## 2. Consider the following directions
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Write the line of code to create a **global variable** called `rotating` and initialize it to **true**.
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```
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rotating = true
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```
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## 3. Consider the following directions
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Write the line of code that create a **while** loop that will be executed only if the **global variable** called `rotating` is **true**.
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```
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while (rotating) {
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}
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```
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## 4. Consider the following code
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```
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basic.showAnimation(`
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# . . . . . . # . . . . . . # . . . . .
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. # . . . . . # . . . . . # . . . . . .
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. . # . . . . # . . . . # . . # # # # #
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. . . # . . . # . . . # . . . . . . . .
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. . . . # . . # . . # . . . . . . . . .
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`, 400)
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```
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If the rectangles below represents a board that is 5 LEDs wide and 5 LEDs tall, place an X approximately where the LED is lighted in the series. Explain why the LED is lighted there.
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