This math game requires a calculated team effort to reach 100 without making a mistake.
Players take turns counting, beginning with one. Every time a player gets to a number that's divisible by seven (7, 14, 21) or has a seven in it (17), they must say "Buzz" instead of the number.
If one person forgets to say "Buzz," everyone has to start over. If this is too hard for younger players, say "Buzz" for every number that's divisible by five.
If you want a real challenge, try Fuzz Buzz. Say "Fuzz" for every number with a three in it or that's divisible by three, and "Buzz" for every number with a seven in it or that's divisible by seven.