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# pogo lesson
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create a game that relies on precise instincts and timing reflexes #if #.
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## Topic
Running Time
## Quick Links
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* [activity ](/lessons/pogo/activity )
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## Prior learning/place of lesson in scheme of work
Learn how to use running time. We will be learning how to create a pogo game using variables, forever loop, conditionals, on button pressed, as well as simple commands, such as show LEDs and clear screen.
## Documentation
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```cards
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let jumps = 0
let acc = input.acceleration(Dimension.Y)
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basic.showNumber(0)
radio.receiveNumber()
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led.stopAnimation()
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radio.sendNumber(0)
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basic.forever(() => { })
basic.showLeds(`
. . . . .
. # . # .
. . # . .
# . . . #
. # # # .
`)
basic.clearScreen()
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if (true) {}
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radio.onDataReceived(() => { })
```
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## Objectives
* learn how to create a function as a unit of code that performs a specific task and returns a result
* learn how arithmetic operators operate on numbers and return a number
* learn how to repeat code in the background forever
* learn how to conditionally run code depending on whether a condition is true or not
* learn how to run code when an input button is pressed
* learn how to pause your code for the specified number of milliseconds
