Migrate docs from the other repo

docs/lessons/snowflake-fall/activity.md

@@ -0,0 +1,63 @@
+# snowflake fall blocks activity
+
+design a blinking rectangle animation. #docs #tutorials #stepByStep
+
+### ~avatar avatar
+
+### @video td/videos/snowflake-fall-0
+
+Welcome! This tutorial will teach how design a **snowfall animation**. Let's get started!
+
+### ~
+
+Let's start by creating a `forever` loop that will allow us to repeat the show LEDs code. Any code in the `forever` loop will repeat in the background... forever.
+
+
+```blocks
+basic.forever(() => {
+    basic.showLeds(`
+        . . . . .
+        . . # . .
+        . # # # .
+        . . # . .
+        . . . . .
+        `)
+    basic.showLeds(`
+        . . . . .
+        . . . . .
+        . . . . .
+        . . . . .
+        . . . . .
+        `)
+})
+```
+
+The next step is to add two `show LEDs` blocks inside the `forever` loop to repeat an animation.
+
+```blocks
+basic.forever(() => {
+    basic.showLeds(`
+        . . . . .
+        . . # . .
+        . # # # .
+        . . # . .
+        . . . . .
+        `)
+    basic.showLeds(`
+        . . # . .
+        . # . # .
+        # . . . #
+        . # . # .
+        . . # . .
+        `)
+})
+```blocks
+
+Run your code in the simulator or download it to your BBC micro:bit to see what happens!
+
+### ~avatar avatar
+
+Excellent, you're ready to continue with the [challenges](/microbit/lessons/snowflake-fall/challenges)!
+
+### ~
+

docs/lessons/snowflake-fall/challenges.md

@@ -0,0 +1,34 @@
+# snowflake fall blocks challenges
+
+Coding challenges for snowflake fall. 
+
+## Before we get started
+
+Complete the [snowflake fall](/microbit/lessons/snowflake-fall/activity) activity and your code will look like this:
+
+![](/static/mb/blocks/lessons/snowflake-fall-1.jpg)
+
+### Challenge 1
+
+### @video td/videos/snowflake-fall-1
+
+Let's begin creating our falling effect by adding another snowflake with `show LEDs` that displays a different snowflake pattern after the first one. We need 2 frames in the new animation that display both the first and the second snowflake images.
+
+![](/static/mb/blocks/lessons/snowflake-fall-2.jpg)
+
+* Run your program to see the cool animation.
+
+### Challenge 2
+
+### @video td/videos/snowflake-fall-2
+
+To finalize our snowflake fall, let's add a different snowflake pattern.
+
+![](/static/mb/blocks/lessons/snowflake-fall-3.jpg)
+
+* Run your program and see if it works.
+
+### Challenge 3
+
+Add a fourth frame to the current animation... or make it your own!
+

docs/lessons/snowflake-fall/quiz-answers.md

@@ -0,0 +1,30 @@
+# snowflake fall blocks quiz answers
+
+Create a snowflake fall animation.  
+
+This is the answer key for the [snowflake fall quiz](/microbit/lessons/snowflake-fall/quiz).
+
+## 1. What is a forever loop?
+
+Run code in the background forever (answers may vary).
+
+## 2. Draw the picture that will be produced with this code
+
+![](/static/mb/blocks/lessons/snowflake-fall-4.png)
+
+![](/static/mb/lessons/flashing-heart-0.png)
+
+## 3.Write the code for a forever loop and show LEDS for these images!
+
+![](/static/mb/lessons/snowflake-fall-0.png)
+
+![](/static/mb/blocks/lessons/snowflake-fall-5.png)
+
+## 4. Write the code for a forever loop and show LEDS for these images!
+
+![](/static/mb/lessons/snowflake-fall-1.png)
+
+![](/static/mb/lessons/snowflake-fall-2.png)
+
+![](/static/mb/blocks/lessons/snowflake-fall-6.png)
+

docs/lessons/snowflake-fall/quiz.md

@@ -0,0 +1,36 @@
+# snowflake fall blocks quiz
+
+Create a snowflake fall animation 
+
+## Name
+
+## Directions
+
+Use the hints in the [snowflake fall activity](/microbit/lessons/snowflake-fall/activity) to answer this quiz!
+
+## 1. What is a forever loop?
+
+<br />
+
+## 2. Draw the picture that will be produced with this code
+
+![](/static/mb/blocks/lessons/snowflake-fall-4.png)
+
+![](/static/mb/empty-microbit.png)
+
+<br/>
+
+## 3. Write the code for a forever loop and show LEDS for these images!
+
+![](/static/mb/lessons/snowflake-fall-0.png)
+
+<br/>
+
+## 4. Write the code for a forever loop and show LEDS for these images!
+
+![](/static/mb/lessons/snowflake-fall-1.png)
+
+![](/static/mb/lessons/snowflake-fall-2.png)
+
+<br/>
+