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

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+# zoomer activity
+
+measure the acceleration on the BBC micro:bit in the "z" direction. #microbit #docs
+
+### ~avatar avatar
+
+### @video td/videos/zoomer-0
+
+Welcome! This tutorial will teach how to measure the acceleration on the micro:bit in the "z" direction. 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**.
+
+We want to display the acceleration forever. In order to do so, we need a `basic->forever` loop.
+
+```
+basic.forever(() => {
+})
+```
+
+Let's measure the acceleration and then store in it a variable `az`. The acceleration is measured in **milli-gravities**, so a value of `-1000` is equivalent to `-1g` or `-9.81m/s^2`.
+
+```
+basic.forever(() => {
+    let az = input.acceleration("z")
+})
+```
+
+Show the value of `az` on the screen.
+
+```
+basic.forever(() => {
+    let az_ = input.acceleration("z")
+    basic.showNumber(az_, 150)
+})
+```
+
+### ~avatar avatar
+
+Excellent, you're ready to continue with the [challenges](/microbit/lessons/zoomer/challenges)!
+
+### ~
+

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

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+# zoomer challenges
+
+Coding challenges for the zoomer tutorial.#acceleration #docs #input
+
+## Before we get started
+
+Complete the following [guided tutorial](/microbit/lessons/zoomer/tutorial) and your finished code should look like this:
+
+```
+basic.forever(() => {
+    let az = input.acceleration("z")
+    basic.showNumber(az, 150)
+})
+```
+
+### Challenge 1
+
+### @video td/videos/zoomer-2
+
+We'll modify the code to display the `x` acceleration if the `A` button is pressed. For that, we need to store `input->acceleration(x)` in a new variable `ax` and use a `input->button is pressed(A)` to detect if the button is pressed.
+
+```
+basic.forever(() => {
+    let az1 = input.acceleration("z")
+    let ax = input.acceleration("x")
+    if (input.buttonIsPressed("A")) {
+        basic.showNumber(ax, 150) // ***
+    } else {
+        basic.showNumber(az1, 150) // ***
+    }
+})
+```
+
+* Run the code to see if it works as expected.
+
+### Challenge 2
+
+Display the `y` acceleration when `B` is pressed by adding another `if` statement using `input->button is pressed(B)`.
+

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

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+# zoomer quiz answers
+
+Measure the acceleration on the micro:bit in the "z" direction #LED #number #math #acceleration #docs
+
+This is the answer key for the [zoomer quiz](/microbit/lessons/zoomer/quiz).
+
+## 1. What is 'acceleration'?
+
+Acceleration is amount of force being applied to the BBC micro:bit in one of three specified directions.
+
+## 2. Consider the following directions
+
+Write the line of code to measure the acceleration and then store in it a variable.
+
+<br/>
+
+```
+let accX_ = input.acceleration("x")
+```
+
+Note: acceleration does not have be measured in the "x" direction. It can also be in the "y" or "z" direction.
+
+## 3. Consider the following directions
+
+After storing the acceleration in a variable, write the code to show acceleration on the BBC micro:bit as a number
+
+<br/>
+
+```
+let accX = input.acceleration("x")
+basic.showNumber(accX_, 150)
+```
+
+Note: make sure the same variable name ("acc x" in this case) is the same in both lines of code..
+

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

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+# zoomer quiz
+
+Measure the acceleration on the micro:bit in the "z" direction #LED #number #math #acceleration #docs
+
+## Name
+
+## Directions
+
+Use this activity document to guide your work in the [zoomer tutorial](/microbit/lessons/zoomer/tutorial)
+
+Answer the questions while completing the tutorial. Pay attention to the dialogues!
+
+## 1. What is 'acceleration'?
+
+<br/>
+
+## 2. Write the line of code to measure the acceleration and then store in it a variable.
+
+<br/>
+
+## 3. After storing the acceleration in a variable, write the code to show acceleration on the BBC micro:bit as a number.
+
+<br/>
+