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updated lessons

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Michael Elliot Braun
2016-03-30 15:11:05 -07:00
parent f00491df52
commit 1e77491b16
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84
docs/lessons/spinner/activity.md
View File

@ -12,19 +12,95 @@ Welcome! This guided tutorial will teach how to program a script that randomly p
Let's begin by adding an `on shake` condition to know when the micro:bit is shaken.
![](/static/mb/blocks/lessons/spinner-0.jpg)
```blocks
input.onGesture(Gesture.Shake, () => {
})
```
Now let's randomly generate a number from 0 to 3 so that we can randomly display an arrow in a given direction.
![](/static/mb/blocks/lessons/spinner-1.jpg)
```blocks
input.onGesture(Gesture.Shake, () => {
let randomArrow = Math.random(4)
if (randomArrow = 3) {
basic.showLeds(`
. . # . .
. # # # .
# # # # #
. . # . .
. . # . .
`)
}
})
```
Now let's handle each of the cases by displaying the appropriate arrow. (Let's display an up arrow if `random arrow` is 0.
![](/static/mb/blocks/lessons/spinner-2.jpg)
```blocks
input.onGesture(Gesture.Shake, () => {
let randomArrow = Math.random(4)
if (randomArrow = 3) {
basic.showLeds(`
. . # . .
. # # # .
# # # # #
. . # . .
. . # . .
`)
}
if (randomArrow = 2) {
basic.showLeds(`
. . # . .
. . # . .
# # # # #
. # # # .
. . # . .
`)
}
})
```
Now let's handle the rest of the cases for `random arrow`.
![](/static/mb/blocks/lessons/spinner-3.jpg)
```blocks
input.onGesture(Gesture.Shake, () => {
let randomArrow = Math.random(4)
if (randomArrow = 3) {
basic.showLeds(`
. . # . .
. # # # .
# # # # #
. . # . .
. . # . .
`)
}
if (randomArrow = 2) {
basic.showLeds(`
. . # . .
. . # . .
# # # # #
. # # # .
. . # . .
`)
}
if (randomArrow = 1) {
basic.showLeds(`
. . # . .
. # # . .
# # # # #
. # # . .
. . # . .
`)
}
})
```
### ~avatar avatar

151
docs/lessons/spinner/challenges.md
View File

@ -6,21 +6,164 @@ Create an arrow that randomly points to a player.
Complete the following [guided tutorial](/microbit/lessons/spinner/activity), your code should look like this:
![](/static/mb/blocks/lessons/spinner-3.jpg)
```blocks
input.onGesture(Gesture.Shake, () => {
let randomArrow = Math.random(4)
if (randomArrow = 3) {
basic.showLeds(`
. . # . .
. # # # .
# # # # #
. . # . .
. . # . .
`)
}
if (randomArrow = 2) {
basic.showLeds(`
. . # . .
. . # . .
# # # # #
. # # # .
. . # . .
`)
}
if (randomArrow = 1) {
basic.showLeds(`
. . # . .
. # # . .
# # # # #
. # # . .
. . # . .
`)
}
})
```
### Challenge 1
Modify the random number generator so that it can include new arrows we will create in the next challenge.
![](/static/mb/blocks/lessons/spinner-4.jpg)
```blocks
input.onGesture(Gesture.Shake, () => {
let randomArrow = Math.random(8)
if (randomArrow = 3) {
basic.showLeds(`
. . # . .
. # # # .
# # # # #
. . # . .
. . # . .
`)
}
if (randomArrow = 2) {
basic.showLeds(`
. . # . .
. . # . .
# # # # #
. # # # .
. . # . .
`)
}
if (randomArrow = 1) {
basic.showLeds(`
. . # . .
. # # . .
# # # # #
. # # . .
. . # . .
`)
}
})
```
* Do **not** run the code yet because it will not work until you have conditions for every random number.
### Challenge 2
Let's add four more arrows that point diagonally.
Let's add more arrows that point diagonally.
```blocks
input.onGesture(Gesture.Shake, () => {
let randomArrow = Math.random(8)
if (randomArrow = 7) {
basic.showLeds(`
. . # . .
. # # # .
# # # # #
. . # . .
. . # . .
`)
}
if (randomArrow = 6) {
basic.showLeds(`
. . # . .
. . # . .
# # # # #
. # # # .
. . # . .
`)
}
if (randomArrow = 5) {
basic.showLeds(`
. . # . .
. # # . .
# # # # #
. # # . .
. . # . .
`)
}
if (randomArrow = 4) {
basic.showLeds(`
. . # . .
. . . # .
# # # # #
. . . # .
. . # . .
`)
}
if (randomArrow = 3) {
basic.showLeds(`
# # # # #
# # # # .
# # # # .
# . . # .
. . . . #
`)
}
if (randomArrow = 2) {
basic.showLeds(`
# # # # #
# # # # #
. . # # #
. # . # #
# . . . #
`)
}
if (randomArrow = 1) {
basic.showLeds(`
# . . . #
# # . # .
# # # . .
# # # # .
# # # # #
`)
}
})
```
![](/static/mb/blocks/lessons/spinner-5.jpg)
* Run your code to see if it works as expected