Greg James and Bella Mackie didn’t pay much attention at school. So they’re asking Britain’s most inspiring teachers to show them what they missed in this series of fascinating and fun lessons. This week it's physics with Mr Hardie, who takes Greg and Bella through the science we need to understand in order to establish a human colony on the moon. You'll also find out how many seconds of fuel Neil Armstrong had left when he landed on the moon, how much it costs per kilo to send something there, and how rich we would all be if we shared a mineral-rich asteroid. Bad students of all ages are welcome. Expect brilliant teachers, captivating subjects but absolutely no homework. Get in touch with your funny school stories and teacher recommendations - email us at [email protected]