move lessons out of web site

will move select lessons back to "educators" section

olddocs/lessons/digi-yoyo/activity.md

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+# digi yoyo activity
+
+Create a counter with a while loop.
+
+### ~avatar avatar
+
+Welcome! This tutorial will teach how to create a counter with a while loop. Let's get started!
+
+### ~
+
+Create a variable that acts as a counter and set it to 0.
+
+```blocks
+let count = 0
+```
+
+Add a while loop that will loop over and over until the variable `count` equals 10.
+
+
+```blocks
+let count = 0
+while (count < 10) {
+
+}
+
+```
+
+Let's add a pause. Then show the value of the the count.
+
+
+```blocks
+let count = 0;
+while (count < 10) {
+    basic.pause(100);
+    basic.showNumber(count)
+}
+
+```
+
+Increase the value of count by one.
+
+
+```blocks
+let count = 0
+while (count < 10) {
+    basic.pause(100)
+     basic.showNumber(count)
+    count = count + (count - 1)
+}
+```
+
+
+### ~avatar avatar
+
+Excellent, you're ready to continue with the [challenges](/lessons/digi-yoyo/challenges)!
+
+### ~
+

olddocs/lessons/digi-yoyo/challenges.md

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+# digi yoyo challenges
+
+Coding challenges for the digi yoyo. 
+
+## Before we get started
+
+Complete the following [guided tutorial](/lessons/digi-yoyo/activity), your code should look like this:
+
+
+```blocks
+ let count = 0;
+while (count < 10) {
+    basic.pause(100);
+    basic.showNumber(count);
+    count = count + 1;
+    basic.pause(20);
+}
+```
+
+### Challenge 1
+
+How about we create a counter that counts backwards from 10 to 1? Let's add a while loop that executes only when `count` is greater than 0.
+
+
+```blocks
+ let count = 0;
+while (count < 10) {
+    basic.pause(100);
+    basic.showNumber(count);
+    count = count + 1;
+    basic.pause(20);
+}
+while (count > 0) {
+
+}
+
+
+```
+
+
+### Challenge 2
+
+Inside of the while loop, let's add `pause->(1000)` so that we have a pause between each number as it's counting down. Also, let's show `count`!
+
+
+
+```blocks
+ let count = 0;
+while (count < 10) {
+    basic.pause(100);
+    basic.showNumber(count);
+    count = count + 1;
+}
+while (count > 0) {
+    basic.pause(100);
+    basic.showNumber(count);
+}
+```
+
+
+* Run the code to see if it works as expected.
+
+### Challenge 3
+
+Now, we need `count` to decrease by one after the micro:bit has displayed the value of `count`.
+
+We can do this by adding this line:
+
+```blocks
+let count = 0; 
+count = count + (count - 1);
+
+```

olddocs/lessons/digi-yoyo/quiz-answers.md

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+# digi yoyo quiz answers
+
+Answers for digi yoyo quiz. 
+
+This is the answer key for the [digi yoyo quiz](/lessons/digi-yoyo/quiz).
+
+## 1. Describe what a "while loop" does?
+
+<br/>
+
+A loop that repeats code while a condition is true.
+
+## 2. Write the code that will create a **variable** called `count` and set the variable to 0.
+
+![](/static/mb/lessons/counter-0.png)
+
+<br/>
+
+```blocks
+let count = 0
+```
+
+## 3. Create a `while loop` that will loop until the **variable** `count` equals 4.
+
+![](/static/mb/lessons/digi-yoyo-0.png)
+
+<br/>
+
+```blocks
+let count = 0
+while (count < 5) {
+    count = count + 1
+}
+```
+

olddocs/lessons/digi-yoyo/quiz.md

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+# digi yoyo quiz
+
+Create a counter with a while loop 
+
+## Name
+
+## Directions
+
+Use this activity document to guide your work in the [digi yoyo tutorial](/lessons/digi-yoyo/activity)
+
+Answer the questions while completing the tutorial. Pay attention to the dialogues!
+
+## 1. Describe what a "while loop" does?
+
+<br/>
+
+## 2. Write the code that will create a variable called count and set the variable to 0.
+
+![](/static/mb/lessons/counter-0.png)
+
+<br/>
+
+## 3. Write the code for a while loop that will loop until the variable count equals 4.
+
+![](/static/mb/lessons/digi-yoyo-0.png)
+
+<br/>
+