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docs/reference/js/lessons/counter/activity.md

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+# counter activity
+
+Display a number with a variable.
+
+### ~avatar avatar
+
+### @video td/videos/counter-0
+
+Welcome! This tutorial will teach you how to make a counter that increments when button A is pressed. Let's get started!
+
+### ~
+
+To create a new script, go to the [Create Code](/microbit/create-code) page and tap *New Project* under **Touch Develop**.
+
+Let's start by creating a **local variable** `count` to keep track of the current count.
+
+```
+let count = 0
+```
+
+The code under ``on button pressed("A")`` will run each time the user presses A. Let's add a line of code that increments `count` by `1`.
+
+```
+let count_ = 0
+input.onButtonPressed("A", () => {
+    count = count + 1
+})
+```
+
+Since the count has changed, it's time to refresh the screen display. Let's add a line of code to display the count on screen.
+
+```
+let count_1 = 0
+input.onButtonPressed("A", () => {
+    count = count + 1
+    basic.showNumber(count, 150)
+})
+```
+
+### ~avatar avatar
+
+Excellent, you're ready to continue with the [challenges](/microbit/lessons/counter/challenges)!
+
+### ~
+

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

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+# counter challenges
+
+Coding challenges for the counter tutorial. 
+
+## Before we get started
+
+Complete the following [guided tutorial](/microbit/lessons/counter/activity) At the end of the tutorial, your code should look like this:
+
+```
+let count = 0
+input.onButtonPressed("A", () => {
+    count = count + 1
+    basic.showNumber(count, 150)
+})
+```
+
+### Challenge 1
+
+### @video td/videos/counter-1-2
+
+Let's add the code to `count` when `B` is pressed. Add an event handler with `input->on button pressed(B)` then add the code to `count`.
+
+```
+let count1 = 0
+input.onButtonPressed("A", () => {
+    count1 = count1 + 1
+    basic.showNumber(count1, 150)
+})
+input.onButtonPressed("B", () => {
+    count1 = count1 - 1 // ***
+    basic.showNumber(count1, 150) // ***
+}) // ***
+```
+
+### Challenge 3
+
+Now let's try to reset the counter when the BBC micro:bit is shaken. You will need to register an event handler with `input->on shake`.
+

docs/reference/js/lessons/counter/lesson-plan.md

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+# counter lesson plan
+
+Learn how to create a counter with with on button pressed.
+
+### @video vimeo/134118661
+
+## Topic
+
+Variable - Counter
+
+## Class
+
+Year 7
+
+## Prior learning/place of lesson in scheme of work
+
+Learn how to creating a **variable** to keep track of the current count. We will be learning how to create a counter app using global variables as well as simple commands, such as on button pressed, and show number.
+
+## What the teacher needs to know
+
+**Program:** A stored set of instructions encoded in a language understood by the computer that does some form of computation, processing input and/or stored data to generate output.**
+
+**Algorithm:** An unambiguous set of rules or a precise step-by-step guide to solve a problem or achieve a particular objective. The guided tutorial follows a algorithm and is a precise step-by-step guide to solve a problem**
+
+**Loop:** A block of code repeated automatically under the program’s control. ** The blink program introduces Forever. Forever will repeats code in the background forever.
+
+**Command:** An instruction for the computer to execute, written in a particular programming language.**
+
+**QuickStart Computing Glossary
+
+## Documentation
+
+* **variables**: [read more...](/microbit/reference/variables/var)
+* **on button pressed** : [read more...](/microbit/reference/input/on-button-pressed)
+* **show number** : [read more...](/microbit/reference/basic/show-number)
+
+## Resources
+
+* Activity: [tutorial](/microbit/lessons/counter/tutorial)
+* Activity: [quiz](/microbit/lessons/counter/quiz)
+* Extended Activity: [challenges](/microbit/lessons/counter/challenges)
+
+## Objectives
+
+* learn how to create a variable
+* learn how to blink a light
+* learn how to repeat turning on and off the light
+
+#### Algorithms
+
+* Understands that iteration is the repetition of a process such as a loop. (AL)
+* Represents solutions using a structured notation. (AL) (AB)
+
+#### Programming & Development
+
+* Creates programs that implement algorithms to achieve given goals. (AL)
+* Declares and assigns variables.(AB)
+
+#### Data & Data Representation
+
+* Understands the difference between data and information. (AB)
+* Defines data types: real numbers and Boolean. (AB)
+
+#### Information Technology
+
+*  Collects, organises and presents data and information in digital content. (AB)
+* Makes appropriate improvements to solutions based on feedback received, and can comment on the success of the solution. (EV)
+
+Computational Thinking Concept: AB = Abstraction; DE = Decomposition; AL = Algorithmic Thinking; EV = Evaluation; GE = Generalisation
+
+## Activity
+
+* time: 20 min.
+* [tutorial](/microbit/lessons/counter/tutorial)
+* [quiz](/microbit/lessons/counter/quiz)
+* assessment opportunities: forever, plot, pause, clear screen
+
+## Extended Activity
+
+* time: 20 min.
+* [challenges](/microbit/lessons/counter/challenges)
+* assessment opportunities: loops, plot, pause, clear screen
+
+## Homework
+
+* Extended Activity: [challenges](/microbit/lessons/counter/challenges)
+
+## Intended follow on
+
+Publish script to the classroom.
+

docs/reference/js/lessons/counter/quiz-answers.md

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+# counter quiz answers 
+
+Learn how to create a counter with the BBC micro:bit button. 
+
+This is the answer key for the [counter quiz](/microbit/lessons/counter/quiz).
+
+## 1. What is a variable?
+
+Answers may vary but a variable is a place where you can store and retrieve data
+
+## 2. Draw the stored value for the variable called count
+
+```
+let count = 0
+```
+
+![](/static/mb/lessons/counter-0.png)
+
+We create a **variable**, `count` to keep track of the current count. The number 0 is stored into memory of the variable.
+
+<br/>
+
+## 3. Draw which LEDs are ON after running this code and pressing button "A" once. Explain you chose to draw that number
+
+```
+let count_ = 0
+input.onButtonPressed("A", () => {
+    count_ = count_ + 1
+    basic.showNumber(count, 150)
+})
+```
+
+![](/static/mb/lessons/counter-1.png)
+
+We are only pressing on button pressed once. So the number to display on the micro:bit is also one.
+
+<br/>
+
+## 4. Draw which LEDs are ON after running this code and pressing button "A" three times. Explain you chose to draw that number
+
+```
+count_ = 0
+input.onButtonPressed("A", () => {
+    count_ = count_ + 1
+    basic.showNumber(count_, 100)
+})
+```
+
+![](/static/mb/lessons/counter-2.png)
+
+We included the code ``on button pressed("A")`` that runs each time the user presses A. The code increments `count` by `1`. We increase `count` by 1 whenever the user presses the button. So the third time the A button is pressed on the BBC micro:bit, the number 3 is displayed
+
+<br/>
+

docs/reference/js/lessons/counter/quiz.md

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+# counter quiz 
+
+Learn how to create a counter with the BBC micro:bit button. 
+
+## Name
+
+## Directions
+
+Use this activity document to guide your work in the [counter tutorial](/microbit/lessons/counter/activity).
+
+Answer the questions while completing the tutorial. Pay attention to the dialogues!
+
+## 1. What is a variable?
+
+<br/>
+
+## 2. Draw the stored value for the variable called count
+
+```
+let count = 0
+```
+
+![](/static/mb/empty-microbit.png)
+
+<br/>
+
+## 3. Draw which LEDs are ON after running this code and pressing button "A" once. Explain you chose to draw that number
+
+```
+let count_ = 0
+input.onButtonPressed("A", () => {
+    count_ = count_ + 1
+    basic.showNumber(count_, 100)
+})
+```
+
+![](/static/mb/empty-microbit.png)
+
+<br/>
+
+## 4. Draw which LEDs are ON after running this code and pressing button "A" three times. Explain you chose to draw that number
+
+```
+count_ = 0
+input.onButtonPressed("A", () => {
+    count_ = count_ + 1
+    basic.showNumber(count_, 100)
+})
+```
+
+![](/static/mb/empty-microbit.png)
+
+<br/>
+