Title: « having a ball » with spherical geometry
elizabeth r chen, mathe·magician


¿¿what is more FUN than playing with a beach ball & wet erase markers??
¡¡doing actual math with them, of course!!

JOIN US for a hands·on exploration of spherical geometry
(duality • points/lines • triangles • circles)

we should have enough spheres for everyone
optional: bring your own laptop running mathematica