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docs/reference/js/lessons/lucky-7/activity.md

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+# lucky 7 activity 
+
+show a number on the LED screen. #docs #tutorials #stepByStep
+
+### ~avatar avatar
+
+### @video td/videos/lucky-7-0
+
+Let's learn how to show the lucky number 7 on the LED screen.
+
+### ~
+
+To create a new script, go to the [Create Code](https://www.microbit.co.uk/create-code) page and tap `New Project` under **Touch Develop**.
+
+We will use `basic->show number` to display a number on the screen. The first argument (`7`) is the number to display and the second argument (`150`) is duration in milliseconds between column scroll. For example, you can reduce `150` to `100` to speed up the scrolling.
+
+```
+basic.showNumber(7, 150) // ***
+```
+
+### ~avatar boothing
+
+Excellent, you're ready to continue with the [challenges](/microbit/lessons/lucky-7/challenges)!
+
+### ~
+

docs/reference/js/lessons/lucky-7/challenges.md

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+# lucky 7 challenges
+
+Coding challenges for the lucky 7 tutorial. #docs
+
+## Before we get started
+
+Complete the [lucky 7](/microbit/lessons/lucky-7/activity) activity and your code will look like this:
+
+```
+basic.showNumber(7, 150)
+```
+
+### Challenge 1
+
+But we also should pause before showing another number. Let's add a pause of 500 milliseconds.
+
+```
+basic.showNumber(7, 150)
+basic.pause(500) // ***
+```
+
+### Challenge 2
+
+### @video td/videos/lucky-7-1-2
+
+What about other multiples of 7? Let's display the next multiple of 7 on the screen!
+
+```
+basic.showNumber(7, 150)
+basic.pause(500)
+basic.showNumber(14, 150) // ***
+```
+
+* Run the code to see if it works as expected.
+
+### Challenge 3
+
+Keep displaying multiples of 7 such as 21 and 28, but don't forget to add pauses between the numbers!
+

docs/reference/js/lessons/lucky-7/quiz-answers.md

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+#  lucky 7 quiz answers
+
+Show a number on the BBC micro:bit. #LED #screen #show #math #docs #input
+
+This is the answer key for the [lucky 7 quiz](/microbit/lessons/lucky-7/quiz).
+
+## 1. Describe what `basic->show number` does?
+
+Answers may vary. This will show a number on the LED screen, one digit at a time (scrolling from left to right).
+
+## 2. Draw every LED that is ON after running this code
+
+```
+basic.showNumber(7, 150)
+```
+
+<br/>
+
+![](/static/mb/lessons/lucky-7-0.png)
+
+## 3. Draw every LED that is ON after running this code
+
+```
+basic.showNumber(21, 150)
+```
+
+![](/static/mb/lessons/lucky-7-1.png)
+
+## 4. Write the code that will be used to display the number 3 on the BBC micro:bit.
+
+![](/static/mb/lessons/lucky-7-2.png)
+
+<br/>
+
+```
+basic.showNumber(3, 150)
+```
+

docs/reference/js/lessons/lucky-7/quiz.md

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+#  lucky 7 quiz
+
+Show a number on the BBC micro:bit. #LED #screen #show #math #docs #input
+
+## Name
+
+## Directions
+
+Use this activity document to guide your work in the [lucky 7 tutorial](/microbit/lessons/lucky-7/tutorial).
+
+Answer the questions while completing the tutorial. Pay attention to the dialogues!
+
+## 1. Describe what "basic->show number" does?
+
+<br/>
+
+## 2. Draw every LED that is ON after running this code
+
+```
+basic.showNumber(7, 150)
+```
+
+![](/static/mb/empty-microbit.png)
+
+<br/>
+
+## 3. Draw every LED that is ON after running this code
+
+```
+basic.showNumber(21, 150)
+```
+
+![](/static/mb/lessons/answering-machine-4.png)
+
+<br/>
+
+## 4. Write the code that will be used to display the number 3 on the BBC micro:bit.
+
+![](/static/mb/lessons/lucky-7-3.png)
+
+<br/>
+
+<br/>
+