If YouTube is blocked, you may be able to access it through VodPod.
What is the first question that springs to mind after watching?
Please leave your questions below and/or Tweet them out to #anyqs, #mathchat and @ColinTGraham!
Share music with me
Click on the button to share your music tracks with me.
Barbershop Harmony- An error has occurred; the feed is probably down. Try again later.
Twitter Counter
Sine of the Times: Dividing the Universe by Zero 
“What kind of coins are those?”
Unsolicited advice: we need to lock that camera down on a tripod, or anything stable really. It’s really tricky to motivate a question from a short video. Even trickier if the camera is unfocused and bobbing around.
Can’t wait to see what you come up with next time.