KenKen and KenDoku are trademarked names
for a style of arithmetic and logic puzzle invented in 2004 by the Japanese math
teacher Tetsuya Miyamoto, an
innovator who says he practices "the art of teaching without teaching”. He
intends the puzzles as an instruction-free method of training the brain. The names Calcudoku and Mathdoku are
sometimes used by those who don't have the rights to use the KenKen or KenDoku
trademarks.
As in sudoku, the goal of each puzzle is to fill
a grid with digits –– 1 through 4 for a 4×4 grid, 1 through 5 for a 5×5, etc.
–– so that no digit appears more than once in any row or column (a Latin square). Grids range in size from 3×3 to 9×9.
Additionally, KenKen grids are divided into heavily outlined groups of cells ––
often called “cages” –– and the numbers in the cells of each cage must produce
a certain “target” number when combined using a specified mathematical
operation (either addition, subtraction, multiplication or division). (www.wikipedia.com)
As of now, many are using Kenken to enhance the ability of students in dealing with integers. There's no harm to try introduce this in our class: a source of fun, learning and bonding.
You can click the following links for free online kendoku puzzle or you can play sudoku in this blog.
