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# guess the number lesson
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Learn to create a random number with input from button A.
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## Topic
Math - Pick Random
## Quick links
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* [activity ](/lessons/guess-the-number/activity )
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* [tutorial ](/lessons/guess-the-number/tutorial )
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* [challenges ](/lessons/guess-the-number/challenges )
* [quiz ](/lessons/guess-the-number/quiz )
* [quiz answers ](/lessons/guess-the-number/quiz-answers )
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## Prior learning/place of lesson in scheme of work
Learn how to create numbers randomly by using the input of the BBC micro:bit. We will be learning how to create random numbers with input using a local variable as well as simple commands, such as pick number and show number.
## Documentation
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```cards
input.onButtonPressed(Button.A, () => {})
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let x = 0
basic.showNumber(0)
Math.random(3)
basic.clearScreen()
```
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## Objectives
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* learn how to run code when an input button is pressed
* learn how a variable is a place where you can store data
* learn how to set the value of a local variable
* learn how to returns a random number
* learn how to show a number on the LED screen, one digit at a time (scrolling left to right)
* learn how to turn off all the LED lights on the LED screen
