'Sixes' is in which students write six answers to questions like, 'Name six prime numbers', or 'Write six logarithmic equations', or 'Write six ways to calculate areas,' or 'Write the names of six cities in which their populations are at least twice that of __ (city)', etc.
Students score points for filling out their pages and in some rounds score additional points for having the same answer as others, and in other rounds they score additional points for having unique answers.