pxt-calliope/olddocs/lessons/smiley/activity.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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# smiley blocks activity
Learn to design a blinking image.
### ~avatar avatar
Welcome! This tutorial will help you make a smiley face blink. Let's get started!
### ~
Create an animation with an image displaying a smiley face and the next image with no LEDs lit up. This will make it look like the smiley face is blinking as the display switches between images.
```blocks
basic.showLeds(`
. # . # .
. # . # .
. . . . .
# . . . #
. # # # .
`)
basic.showLeds(`
. . . . .
. . . . .
. . . . .
. . . . .
. . . . .
`)
```
### ~avatar boothing
Excellent, you're ready to continue with the [challenges](/lessons/smiley/challenges)!
### ~