move lessons out of web site
will move select lessons back to "educators" section
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Tom Ball
122
olddocs/lessons/magic-8/activity.md
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olddocs/lessons/magic-8/activity.md
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# magic 8 activity
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Welcome! This activity will help you create a magic 8 ball on the micro:bit. Let's get started!
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Show a string to instruct the user how to play Magic 8! The magic 8 ball can only answer true or false questions.
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```blocks
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basic.showString("ASK A QUESTION")
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```
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Display the number 8.
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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```
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Create a condition for when the micro:bit is shaken. Then use the block `clear screen` to clear the 8 from the display.
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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input.onGesture(Gesture.Shake, () => {
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basic.clearScreen()
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});
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```
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Create a variable of type number called **randomNumber**. Set **randomNumber** to a random number with a limit of 2. Remember the random function in the math library, picks a random number from 0 to the limit, but not including the limit unless it is 0.
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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input.onGesture(Gesture.Shake, () => {
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basic.clearScreen()
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let randomNumber = Math.random(3)
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});
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```
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Create an if statement for the condition `if randomNumber = 2`. If **randomNumber** is 2, display the string 'Yes'
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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input.onGesture(Gesture.Shake, () => {
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basic.clearScreen();
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let randomNumber = Math.random(3);
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if (randomNumber == 2) {
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basic.showString("YES");
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}
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});
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```
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Create an if statement for the condition `if randomNumber = 1`. If randomNumber is 1, display the string 'No'
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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input.onGesture(Gesture.Shake, () => {
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basic.clearScreen()
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let randomNumber = Math.random(3)
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if (randomNumber == 2) {
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basic.showString("YES")
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} else if (randomNumber == 1) {
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basic.showString("NO")
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}
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})
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```
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If **randomNumber** is not 2 or 1, it must be 0. This is the else condition. If **randomNumber** is 0, display the string 'I don't know'
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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input.onGesture(Gesture.Shake, () => {
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basic.clearScreen()
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let randomNumber = Math.random(3)
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if (randomNumber == 2) {
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basic.showString("YES")
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} else if (randomNumber == 1) {
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basic.showString("NO")
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} else {
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basic.showString("I DON'T KNOW")
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}
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})
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```
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Display the number 8 so users know they can ask the magic 8 ball another question!
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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input.onGesture(Gesture.Shake, () => {
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basic.clearScreen()
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let randomNumber = Math.random(3)
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if (randomNumber == 2) {
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basic.showString("YES")
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} else if (randomNumber == 1) {
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basic.showString("NO")
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} else {
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basic.showString("I DON'T KNOW")
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}
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basic.showNumber(8)
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})
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```
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### ~avatar avatar
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Excellent, you're ready to continue with the [challenges](/lessons/magic-8/challenges)!
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### ~
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105
olddocs/lessons/magic-8/challenges.md
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olddocs/lessons/magic-8/challenges.md
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# magic 8 challenges
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Coding challenges for the magic 8 tutorial
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## Before we get started
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Complete the following [guided tutorial](/lessons/magic-8/activity), and your code should look like this:
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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input.onGesture(Gesture.Shake, () => {
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basic.clearScreen()
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let randomNumber = Math.random(2)
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if (randomNumber == 2) {
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basic.showString("YES")
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} else if (randomNumber == 1) {
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basic.showString("NO")
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} else {
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basic.showString("I DON'T KNOW")
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}
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basic.showNumber(8)
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})
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```
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### Challenge 1
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Now let's increase the number of responses the magic 8 ball can give. How about 5 responses instead? Let's change the limit of `pick random` to 4.
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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input.onGesture(Gesture.Shake, () => {
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basic.clearScreen()
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let randomNumber = Math.random(4)
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if (randomNumber == 2) {
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basic.showString("YES")
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} else if (randomNumber == 1) {
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basic.showString("NO")
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} else {
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basic.showString("I DON'T KNOW")
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}
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basic.showNumber(8)
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})
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```
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### Challenge 2
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Now have the magic 8 ball respond "Try again" if **randomNumber** is 3.
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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input.onGesture(Gesture.Shake, () => {
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basic.clearScreen()
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let randomNumber = Math.random(4)
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if (randomNumber == 3) {
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basic.showString("TRY AGAIN")
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} else if (randomNumber == 2) {
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basic.showString("YES")
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} else if (randomNumber == 1) {
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basic.showString("NO")
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} else {
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basic.showString("I DON'T KNOW")
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}
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basic.showNumber(8)
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})
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```
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### Challenge 3
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Now what about if **randomNumber** is 4? Let's have the magic 8 ball respond "Definitely!".
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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input.onGesture(Gesture.Shake, () => {
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basic.clearScreen()
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let randomNumber = Math.random(4)
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if (randomNumber == 4) {
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basic.showString("DEFINATELY")
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} else if (randomNumber == 3) {
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basic.showString("TRY AGAIN")
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} else if (randomNumber == 2) {
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basic.showString("YES")
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} else if (randomNumber == 1) {
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basic.showString("NO")
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}
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else {
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basic.showString("I DON'T KNOW")
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}
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basic.showNumber(8)
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})
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```
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**Challenge 4**
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Add 3 more responses so your magic 8 ball has 8 possible responses. Be creative!
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60
olddocs/lessons/magic-8/quiz-answers.md
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60
olddocs/lessons/magic-8/quiz-answers.md
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# magic 8 quiz answers
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create a magic 8 ball on the BBC micro:bit.
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## Name
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## Directions
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Use this activity document to guide your work in the [magic 8 activity](/lessons/magic-8/activity).
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Answer the questions while completing the tutorial. Pay attention to the dialogues!
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## 1. Define what an 'if statement' is.
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<br />
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An if statement will conditionally run code depending on whether or not a condition is true.
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## 2. Create a Variable called ``x`` and assign it to a random number between 0 and 2.
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```blocks
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let x = Math.random(3)
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```
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## 3. Write the 'if statement' to check if ``x`` is equal to 2. Inside the 'if statement', display the string "Yes".
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```blocks
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let x = Math.random(3)
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if (x == 2) {
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basic.showString("Yes", 150)
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}
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```
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## 4. Write the 'if statement' to check if ``x`` is equal to 1. Inside the 'if statement', display the string "No."
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```blocks
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let x = Math.random(3)
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if (x == 2) {
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basic.showString("Yes", 150)
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} else if (x == 1) {
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basic.showString("No", 150)
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}
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```
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## 5. Write the code to display the string "I don't know" if the Variable ``x`` is neither 2 nor 1.
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```blocks
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let x = Math.random(3)
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if (x == 2) {
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basic.showString("Yes", 150)
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} else if (x == 1) {
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basic.showString("No", 150)
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}
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else {
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basic.showString("I don't know", 150)
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}
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```
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Note: Students are only required to write the bottom half of this answer (starting with "else").
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32
olddocs/lessons/magic-8/quiz.md
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# magic 8 quiz
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create a magic 8 ball on the BBC micro:bit.
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## Name
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## Directions
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Use this activity document to guide your work in the [magic 8 tutorial](/lessons/magic-8/activity).
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Answer the questions while completing the tutorial. Pay attention to the dialogues!
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## 1. Define what an 'if statement' is.
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<br />
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## 2. Create a Variable called ``x`` and assign it to a random number between 0 and 2.
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<br />
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## 3. Write the 'if statement' to check if ``x`` is equal to 2. Inside the 'if statement', display the string "Yes".
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<br />
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## 4. Write the 'if statement' to check if ``x`` is equal to 1. Inside the 'if statement', display the string "No."
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<br />
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## 5. Write the code to display the string "I don't know" if the Variable ``x`` is neither 2 nor 1.
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<br />
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27
olddocs/lessons/magic-8/tutorial.md
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# Magic 8 tutorial
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Show a string to instruct the user how to play Magic 8! The magic 8 ball can only answer questions with "YES", "NO", or "MAYBE"...
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### Rebuild the game!
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The blocks have been shuffled! Put them back together so that...
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* show "ASK A QUESTION" on the screen
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* when the micro:bit is shaken,
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* generate a random number between 0 and 2.
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* if the number is `2`, show "YES"
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* if the number is `1`, show "NO"
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* otherwise show "MAYBE"...
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```shuffle
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basic.showString("ASK A QUESTION")
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input.onGesture(Gesture.Shake, () => {
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let randomNumber = Math.random(3)
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if (randomNumber == 2) {
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basic.showString("YES")
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} else if (randomNumber == 1) {
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basic.showString("NO")
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} else {
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basic.showString("MAYBE")
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}
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})
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```
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