Grapevine is a game in which each successive participant secretly whispers to the next a phrase whispered to them by the preceding participant. Cumulative errors from mishearing often result in the phrase heard by the last player differing greatly and amusingly from the one uttered by the first.

The game has many other names, including the telephone game, Broken Telephone, Crazy Telephone, operator, grapevine, whisper down the lane and Pass It Down. In the United States, "Telephone" is the most common name for the game. The name "Chinese whispers" is the common British name for the game.

Split the class into two lines. One of the phrases below is then whispered to the first person in each line who then passes it on to the next person in their line. The winning team is the team whose last person can give the most accurate version of the phrase.

"A polyhedron is often defined as a geometric object with flat faces and straight edges."

Suggested by Transum,

"The reciprocal of a fraction is obtained by switching its numerator and denominator. To find the reciprocal of a mixed number, first convert the mixed number to an improper fraction."

Suggested by Transum,

"A composite number is a positive integer which has a positive divisor other than one or itself."

Suggested by Transum,

"For a right angle triangle, the square of the hypotenuse is equal to sum of the squares of the other two sides."

Suggested by Mr Pierce, Maghull High

Do you have any suggestions for mathematical phrases that would work well with this game. Click here to enter your ideas.