put lessons back for Michael

docs/lessons/looper.md

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+# looper blocks lesson
+
+Learn to control blinking LEDs.
+
+## Topic
+
+For Loop
+
+## Quick links
+
+* [activity](/lessons/looper/activity)
+* [challenges](/lessons/looper/challenges)
+* [quiz](/lessons/looper/quiz)
+* [quiz answers](/lessons/looper/quiz-answers)
+
+
+## Class
+
+Year 7
+
+## Prior learning/place of lesson in scheme of work
+
+Learn how to control a blinking LED. We will be learning how to create a blinking app using the for loop as well as simple commands, such as plot and pause.
+
+## Documentation
+
+```cards
+for (let i = 0; i < 5; i++) {}
+basic.showNumber(0)
+basic.pause(100)
+
+
+```
+
+## Objectives
+
+* learn how to repeat code a fixed number of times
+* learn how to show a number on the LED screen, one digit at a time (scrolling from left to right)
+* learn how to pause program execution for the specified number of milliseconds
+* learn how to arithmetic operators operate on numbers and return a number