diff --git a/docs/projects/timing-gates.md b/docs/projects/timing-gates.md
index 355c06db..63a88f33 100644
--- a/docs/projects/timing-gates.md
+++ b/docs/projects/timing-gates.md
@@ -9,6 +9,28 @@ you will need better sensors such as [Hall Effect sensors](https://en.wikipedia.
 
 ### ~
 
+## How does it work?
+
+The two gates are connected to the micro:bit and can detect a car passing through.
+
+![](/static/mb/projects/timing-gates/sketchgates.jpg "Sketch of the gates")
+
+As the car passes through the gate ``0``, it sends an event to the micro:bit through the [on pin pressed](/reference/input/on-pin-pressed) block.
+The micro:bit records the time in a variable ``t0``.
+
+![](/static/mb/projects/timing-gates/sketchgate1.jpg "Sketch first gate")
+
+As the car passes through the gate ``1``, it sends an event to the micro:bit through the [on pin pressed](/reference/input/on-pin-pressed) block.
+The micro:bit records the time in a variable ``t1``.
+
+![](/static/mb/projects/timing-gates/sketchgate2.jpg "Sketch first gate")
+
+The rest is a bit of math and physics. The time taken to cross the gates is computed as the difference of ``t1 - t0``.
+By dividing the distance between the gates by the duration, we get the speed of the car!
+
+![](/static/mb/projects/timing-gates/sketchmath.jpg "Sketch math")
+
+
 ## Materials
 
 * Carboard
@@ -37,27 +59,6 @@ control.eventTimestamp();
 basic.showNumber(0)
 ```
 
-## How does it work?
-
-The two gates are connected to the micro:bit and can detect a car passing through.
-
-![](/static/mb/projects/timing-gates/sketchgates.jpg "Sketch of the gates")
-
-As the car passes through the gate ``0``, it sends an event to the micro:bit through the [on pin pressed](/reference/input/on-pin-pressed) block.
-The micro:bit records the time in a variable ``t0``.
-
-![](/static/mb/projects/timing-gates/sketchgate1.jpg "Sketch first gate")
-
-As the car passes through the gate ``1``, it sends an event to the micro:bit through the [on pin pressed](/reference/input/on-pin-pressed) block.
-The micro:bit records the time in a variable ``t1``.
-
-![](/static/mb/projects/timing-gates/sketchgate2.jpg "Sketch first gate")
-
-The rest is a bit of math and physics. The time taken to cross the gates is computed as the difference of ``t1 - t0``.
-By dividing the distance between the gates by the duration, we get the speed of the car!
-
-![](/static/mb/projects/timing-gates/sketchmath.jpg "Sketch math")
-
 ## Building the gate
 
 The sensor is made by tapping two strips of fail on the cardboard as close as possible.