pxt-calliope/docs/lessons/die-roll.md

61 lines
1.4 KiB
Markdown
Raw Normal View History

2016-03-26 00:47:20 +01:00
# die roll lesson
create a die on the BBC micro:bit #button #pressed #math #random #var #string #if #docs
### @video td/videos/die-roll-0
## Topic
If (Conditionals)
## Quick Links
* [activity](/microbit/lessons/die-roll/activity)
* [challenges](/microbit/lessons/die-roll/challenges)
2016-03-31 00:54:19 +02:00
* [quiz](/microbit/lessons/die-roll/quiz)
* [quiz answers](/microbit/lessons/die-roll/quiz-answers)
2016-03-26 00:47:20 +01:00
## Prior learning/place of lesson in scheme of work
Learn how to use an if statements to run code run code depending on whether a condition is true or not. We will be learning how to create a die with If statements, On Shake, Variables, Assignment Operator, Pick Random and Show LEDs
## Documentation
2016-03-30 00:59:00 +02:00
```docs
2016-03-26 00:47:20 +01:00
2016-03-30 00:59:00 +02:00
input.onGesture(Gesture.Shake, () => {
2016-03-26 00:47:20 +01:00
2016-03-30 00:59:00 +02:00
})
2016-03-26 00:47:20 +01:00
2016-03-30 00:59:00 +02:00
let x = 0
x = Math.random(3)
2016-03-26 00:47:20 +01:00
2016-03-30 00:59:00 +02:00
if (true) {
2016-03-26 00:47:20 +01:00
2016-03-30 00:59:00 +02:00
}
2016-03-26 00:47:20 +01:00
2016-03-30 00:59:00 +02:00
basic.showLeds(`
. . . . .
. . . . .
. . # . .
. . . . .
. . . . .
`)
2016-03-26 00:47:20 +01:00
2016-03-30 00:59:00 +02:00
```
2016-03-26 00:47:20 +01:00
2016-03-30 00:59:00 +02:00
## Objectives
2016-03-26 00:47:20 +01:00
2016-03-30 00:59:00 +02:00
* learn how to run code when the BBC micro:bit is shaken, when running code in the web browser, moving the mouse quickly simulates shaking
* learn how to create a local variable as a place where you can store and retrieve data
* learn how the assignment operator is used to declare a new local variable
* 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 an image on the LED screen