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2011e.00865 Harvey, Roger Using variations on KenKen to develop arithmetic and algebraic skills. N. Z. Math. Mag. 48, No. 1, 59-61 (2011). 2011 Auckland Mathematical Association, Auckland EN U63 A30 H23 puzzles educational games arithmetic elementary algebra Summary: KenKen is a puzzle which requires to fill out a grid of numbers following given constraints. By using multiples instead of numbers, puzzles can be created which require students to use their algebraic skills.