CTK Insights

For Day 4 of the break, I shall present 4 games that may at first appear rather unrelated; this is the purpose of the activity to discover the commonality between the four. All four are two-players games, with the players moving in turns. The Fish Soup game For the game you should prepare 9 cards [...]

Counting a group of objects can be done in many different ways. The most fundamental idea is that counting is at all possible in the sense that, regardless of the manner in which it is performed, the result is always the same. For example, place random numbers in a rectangular array and then compute separately [...]

An interesting problems has been offered at the 1993-1994 Saint Petersburg Regional Mathematical Olympiad, grade 9. Ten chips are placed on the main diagonal of a 10×10 chessboard, one chip per a square. A move consists in selecting two chips and moving each - if possible for both - to the next square below its [...]