pxt-calliope/olddocs/lessons/blink.md
Tom Ball f4eca66648 move lessons out of web site
will move select lessons back to "educators" section
2016-06-14 11:49:58 -04:00

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Markdown

# blink blocks lesson
Learn how to create a blinking LED.
## Topic
Plot
## Quick links
* [activity](/lessons/blink/activity)
* [quiz](/lessons/blink/quiz)
* [quiz answers](/lessons/blink/quiz-answers)
* [challenges](/lessons/blink/challenges)
## Prior learning / place of lesson in scheme of work
Learn how to control a blinking LED. We will be learning how to create a blinking app using forever as well as simple commands, such as plot, unplot and pause.
## Documentation
```cards
led.plot(0, 0)
led.unplot(0, 0)
basic.pause(100)
basic.forever(() => {})
```
## Objectives
* learn how to turn on LED lights on the LED screen
* learn how to turn off LED lights on the LED screen
* learn how to pause program execution for the specified number of milliseconds