First Contact / Arecibo Message
Inspired from a lecture by Sir Patrick Moore, this is a fairly simple activity that gets pupils to think about what kind of message we would send to Aliens and how we would send it. Once they've considered various issues pupils complete a 'paint by numbers' type activity to see what Sir Patrick Moore recommends.
The is answer to this activity. Or download both files as a single zip file.
Find out what alien message NASA have put aboard the Voyager spacecraft (the only spacecraft to leave our solar system).
The Arecibo Message was a real life version of this activity. A further activity based on the Arecibo Message.