This happy little math lesson features a Bob Ross-style mini-lecture on logarithms. Puns, math, references to Bob Ross, the outdoors, and a really kind teacher: That’s the combination school children ...

Logarithms are a common idea today, even though we don’t use them as often as we used to. After all, one of the major uses of logarithms is to simplify computations, and computers do that just fine ...

You may find this hard to believe, but there are people still alive today who once did their mathematical calculations by sliding sticks back and forth. No keypads, no batteries, no LEDs. Just sticks.