put lessons back for Michael

docs/lessons/flashing-heart/quiz-answers.md

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+# flashing heart blocks quiz answers
+
+Learn how to create an image with a variable. 
+
+This is the answer key for the [flashing heart quiz](/lessons/flashing-heart/quiz).
+
+## 1. Describe what pause does 
+
+Pause program execution for the specified number of milliseconds.
+
+## 2. Write the code that leaves an image on the screen for 1 second (1000 milliseconds) 
+
+
+```blocks
+basic.pause(1000)
+```
+
+## 3. Write the code that leaves an image on the screen for 1.5 seconds (1500 milliseconds) 
+
+```blocks
+basic.pause(1500)
+```
+
+