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docs/reference/js/lessons/smiley/challenges.md

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+# smiley challenges
+
+Coding challenges for the smiley tutorial. #docs
+
+## Before we get started
+
+Complete the [smiley activity](/microbit/lessons/smiley/activity) and your code will look like this:
+
+```
+basic.showAnimation(`
+. # . # . . . . . .
+. # . # . . . . . .
+. . . . . . . . . .
+# . . . # . . . . .
+. # # # . . . . . .
+`, 400)
+```
+
+### Challenge 1
+
+What if we want to make the face to frown when button `A` is pressed?
+
+Let's make add code that will run when button `A` is pressed!
+
+```
+basic.showAnimation(`
+. # . # . . . . . .
+. # . # . . . . . .
+. . . . . . . . . .
+# . . . # . . . . .
+. # # # . . . . . .
+`, 400)
+input.onButtonPressed("A", () => {
+}) // ***
+```
+
+### Challenge 2
+
+### @video td/videos/smiley-2
+
+Now, we want to show a frowny face when this button is pressed. Let's plot that image.
+
+```
+basic.showAnimation(`
+. # . # . . . . . .
+. # . # . . . . . .
+. . . . . . . . . .
+# . . . # . . . . .
+. # # # . . . . . .
+`, 400)
+input.onButtonPressed("A", () => {
+    basic.showLeds(`
+. # . # .
+. # . # .
+. . . . .
+. # # # .
+# . . . #
+`, 400) // ***
+})
+```
+
+* Run your code to see if it works as expected.
+
+### Challenge 3
+
+When button `B` is pressed, let's change the sad face back to a happy face. To do this, begin by adding a condition for `input->on button pressed(B)`. Then show a smiley face inside the condition.
+