pxt-calliope/docs/lessons/truth-or-dare.md
2016-11-01 10:42:42 -07:00

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# truth or dare lesson
create a love meter with the @boardname@.
## Topic
If (Conditionals)
## Quick Links
* [activity](/lessons/truth-or-dare/activity)
* [tutorial](/lessons/truth-or-dare/tutorial)
* [challenges](/lessons/truth-or-dare/challenges)
* [quiz](/lessons/truth-or-dare/quiz)
* [quiz answers](/lessons/truth-or-dare/quiz-answers)
## Prior learning/place of lesson in scheme of work
Learn how to use an if statement to run code run code depending on whether a condition is true or not. We will be learning how to create the game truth or dare using input an if statement, a local variable, math random as well as simple commands, such as show string and show LEDs.
## Documentation
```cards
basic.showLeds(`
. . . . .
. . . . .
. . # . .
. . . . .
. . . . .
`)
input.onButtonPressed(Button.A, () => {})
let x = 0
Math.random(3)
if (true) {}
basic.showString("Hello!")
```
## Objectives
* learn how to display an image on the @boardname@
* learn how to run code when an input button is pressed
* learn how to a create a variable for a place where you can store and retrieve data
* learn how to declare a new local variable or update the value of a variable
* learn how to return a random number
* learn how to conditionally run code depending on whether a condition is true or not
* learn how to show a string on the LED screen one character at a time (scrolling from left to right)