pxt-calliope/docs/reference/js/lessons/looper/quiz.md

# looper quiz

Learn how to create a series of numbers with a for loop. #LED #screen #plot #docs

## Name

## Directions

Use this activity document to guide your work in the [looper tutorial](/microbit/lessons/looper/tutorial)

Answer the questions while completing the tutorial. Pay attention to the dialogues!

## 1. Describe what a "for loop" does?

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## 2. Draw the areas where the LEDs will be lit based on the code below. Explain why you chose to draw those numbers.

```
for (let i = 0; i < 4; i++) {
    basic.showNumber(i, 150)
}
```

![](/static/mb/lessons/looper-2.png)

<br/>

## 3. Draw the areas where the LEDs will be lit based on the code below. Explain why you chose to draw those numbers.

```
for (let i1 = 0; i1 < 6; i1++) {
    basic.showNumber(i1, 150)
}
```

![](/static/mb/lessons/looper-3.png)

![](/static/mb/lessons/looper-3.png)

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