Here, we introduce the branch of mathematics called probability by discussing its origin in the dim and dank gambling houses of 17th century France. From there, we hit geometric probability involving lengths of segments and areas of things like lakes filled with fiery meteors. Duration: 22:58

Want to try some experimental probability by flipping a coin? What's that, we are currently in a coin shortage and you only have folding money? No worries, just try the applet embedded below. The first slider changes the probability of getting heads, which is theoretically 50% or 0.5. The second slider allows you to change the number of tosses. Hit the Green button to begin tossing. Note the adorable image of a coin that appears each time it is tossed, which is absolutely essential for those of us who have trouble distinguishing a human head from a non-human building.