pxt-calliope/docs/reference/js/lessons/lucky-7/activity.md

# lucky 7 activity 

show a number on the LED screen.

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### @video td/videos/lucky-7-0

Let's learn how to show the lucky number 7 on the LED screen.

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We will use `basic->show number` to display a number on the screen. The first argument (`7`) is the number to display and the second argument (`150`) is duration in milliseconds between column scroll. For example, you can reduce `150` to `100` to speed up the scrolling.

```
basic.showNumber(7, 150) // ***
```

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Excellent, you're ready to continue with the [challenges](/lessons/lucky-7/challenges)!

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