16:38

A number NOBODY has thought of - Numberphile

13:35

3 Paradoxes That Gave Us Calculus

13:36

David Spiegelhalter and False Positives

27:31

Measure the Earth’s Radius! (with this one complicated trick)

9:05

Mesolabe Compass and Square Roots - Numberphile

54:22

50 Centuries in 50 minutes (A Brief History of Mathematics)

3:21

Become a MILLIONAIRE by winning The Parker Prize (extra footage)

5:14

Johnny Ball estimates the number of black cabs in London - Bang Goes the Theory - BBC