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.

PART IV. of this monumental work, the third to be published, gives the logarithms of numbers between 40,000 and 50,000. These were obtained by adding the logarithm of 0.5 to the logarithms of all the ...

Table of Logarithms and Anti-logarithms (Four Figures), 1 to 10,000. Arranged by Major-Gen. J. C. Hannyngton. Pp. iv + 41. (London: C. and E. Layton, n.d.). Price 1s ...

Puns, math, references to Bob Ross, the outdoors, and a really kind teacher: That’s the combination school children deserve, dang it! And yet it almost never happens. But that’s OK; the world’s still ...