This is a Disco Calculator designed and made by Sam Headleand to pass all of my 'calculator unboxing' tests. Watch me unbox calculators: https://www.youtube.com/watch?v=wyl-V0mrEio I interviewed Sam at the MathsJam Weekend 2015: http://mathsjam.com/ Sam is hugely appreciative of the facilities at Fab Lab Manchester: http://manchesterfablab.manufacturinginstitute.co.uk/ You can buy a normal Disco Calculator at Maths Gear. http://mathsgear.co.uk/products/disco-calculator Divide and conga. MATT PARKER: Stand-up Mathematician Website: http://standupmaths.com/ Maths book: http://makeanddo4D.com/ Nerdy maths toys: http://mathsgear.co.uk/ Music by Howard Carter Design by Simon Wright