Take and Make: Genaille-Lucas Rulers

Lauren SiegelHistory Connections, Intern Experience, Take and MakeLeave a Comment

Genaille-Lucas Rulers are pretty cool.  They are a clever calculator that you can use to multiply some pretty big numbers.

MathHappens summer staff member Anh Nguyen made a colorful set from scratch in Corel Draw that you can download and print on a laser or inkjet printer.  Feel free to copy, explore, and use.  It’s a great project to try to reverse engineer and figure out how they work.  (You can also check the wikipedia for some hints)


Leave a Reply

Your email address will not be published. Required fields are marked *