put lessons back for Michael

docs/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)!
+
+### ~
+