In "All's Fair," Alan, Larry, and Charlie play and discuss a sudoku puzzle. Sudoku puzzles were designed by Howard Grans and first published in 1979. Popular in Japan since the 1980's, the puzzle has gained attention in the United States and Europe in recent years and many versions are now published in newspapers and on the Internet.
Before the Activity
Download the attached PDF and look over the Teacher Page.
During the Activity
Discuss the materials from the Student Page with your class.
After the Activity
Encourage students to explore web sites and questions from the Extensions page.