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A particular technique for solving Sudoku puzzles, known as "naked pair", is explained in this easy-to-read article.
This second Sudoku article discusses "Corresponding Sudokus" which are pairs of Sudokus with terms that can be matched using a substitution rule.
Activities and material for teachers.
An article for teachers based on a lecture and workshop activities at the NZAMT conference in New Zealand 2007
Jenny Piggott reflects on the event held to mark her retirement from the directorship of NRICH, but also on problem solving itself.
In this article, learn about Graeco-Latin Squares like those found in the Teacups problem.
Can one example help us to perceive the generality?
Whether you are reflecting on the mathematical developments children have made over the year, or thinking about activities for a transition day this article offers plenty of ideas and tasks to. . . .