Green Screen Studio or a TV and Raspberry Pi?

When you have a friend with an OFSTED inspection, hoping to teach an invigorating Maths lesson. You could go out and get a Green Screen Studio, multi-million pounds worth of special effects budget and some professionals in... Or you could leave it to us to knock it up for next to nothing....

So how did we do it?  

Well firstly, we used a Samsung Camcorder, a script, a nearby television and a video source on a loop. (The Raspberry Pi played the video)   We then edited in some library footage and we had a video ready to go.

Look for yourself, considering the DIY nature of the set-up it performed pretty well and opens up a wide range of applications. Imagine the possibilities for students to film themselves anywhere with anything in the background.

The Maths exercises to go with the video can be found at:
https://drive.google.com/#folders/0B-tNSVgcXSshTWlKSU9hTks3eVU