updated lessons

docs/lessons/bop-it/activity.md

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+# bop it challenges
+
+a game similar to "Simon Says" with the BBC micro:bit. #docs
+
+## Before we get started
+
+Complete the following guided tutorial. Your code should look like this:
+
+```blocks
+newAction() // ***
+input.onButtonPressed(Button.A, () => {
+    if (action == 0) {
+        game.addScore(1) // ***
+        newAction() // ***
+    }
+}) // ***
+input.onLogoDown(() => {
+    if (action == 1) {
+        game.addScore(1) // ***
+        newAction() 
+    }
+}) 
+input.onGesture(Gesture.Shake, () => {
+    if (action == 2) {
+        game.addScore(1)
+        newAction()
+    }
+}) 
+input.onButtonPressed(Button.B, () => {
+    basic.showNumber(game.score(), 150) // ***
+    basic.pause(2000) // ***
+    newAction() // ***
+}) 
+```
+
+### Challenge 1
+
+Now let's add some more types of instructions for the player to follow. Let's add `PRESS PIN 0`. Change the global variable `action` to `math->random(4)` so that we can add a new **IF** statement that checks if `action=3`. If it does, display instructions to press pin 0.
+
+```blocks
+/**
+ * {highlight}
+ */
+export function newAction_() {
+    action = Math.random(4) // ***
+    if (action == 0) {
+        basic.showString("PUSH A", 150) // ***
+    }
+    if (action == 1) {
+        basic.showString("LOGO DOWN", 150) // ***
+    }
+    if (action == 2) {
+        basic.showString("SHAKE", 150) // ***
+    }
+    if (action == 3) {
+        basic.showString("PRESS PIN 0", 150) // ***
+    }
+}
+```
+
+### Challenge 2
+
+Now let's implement `PRESS PIN 0` in the main. Create a condition of `input->on pin pressed("P0")` that will add one to the score and calls the method `new action`.
+
+```
+// **. . .**
+input.onButtonPressed(Button.B, () => {
+    basic.showNumber(game.score(), 150) // ***
+    basic.pause(2000) // ***
+    newAction() // ***
+}) // ***
+input.onPinPressed(TouchPin.P0, () => {
+    if (action == 3) {
+        game.addScore(1) // ***
+        newAction() // ***
+    }
+}) // ***
+```
+
+### Challenge 3
+
+Add `POINT ME NORTH` to the list of possible commands.
+