Reminder: if you're a secondary-school teacher, and want to give your students a hands-on activity for learning logarithms, my site

cardboard-computer.org/

is free (libre and gratuit) and has no ads, analytics, or tracking cookies. You can download templates to build your own sliderule, and there are instructions and interactive exercises for using it.

(Tell them it's a steampunk calculator.)

#slideRules #teaching #math