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Go around the room. Start with multiples of three. Every time a student gets to a multiple of three, they say "ping". So you start and things progress as follows:

Student one: "one"
Student two: "two"
Student three: "ping"
Student four: "four"
Student five: "five"
Student six: "ping"
and so on.

Then go around again. This time multiples of five say pong.

Student one: "one"
Student two: "two"
Student three: "ping"
Student four: "four"
Student five: "pong"
Student six: "ping"
Student seven: "seven"
Student eight: eight
Student nine: "ping"
and so on. Note student fifteen will say, "ping pong."

You can even go around a third time and add "pang" for multiples of seven.

Problems and exercises compiled by Math Curriculum Specialist Tanya Ghattas and Burt Kanner.
Web pages composed by Jim Saffeels, SK Online.

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