Rompicapo Giochi di logica e Matematica ricreativa Touch Mathematics AIMS Puzzle Corner: Free Math Puzzles This week’s Puzzle Corner activity is a magic trick with a mathematical, as well as a slight-of-hand, component. I first came across this trick in one of Martin Gardner’s many books on recreational mathematics. I liked it so much that I have been stumping students, friends, and family members with it ever since. In order to make this trick work, you will need to practice it by yourself until the moves (illustrated at bottom) become automatic, before trying it out on someone else. You will need at least three cups to perform this trick. Begin this trick by explaining that the goal is to get all three cups facing up after making exactly three moves. Next, invite one of the students who was watching to get all the cups facing up in three moves. What students realize at this point is that when they try the trick, the cups are set up differently than they are when you do the trick. The reason for this is quite simple once you think about it. Performing the trick: 1. 2. 3. 4.
MathDoku - Play Thousands of Free Online Puzzles The Online Guide to Traditional Games Contents, Interactive Mathematics Miscellany and Puzzles Since May 6, 1997You are visitor number E66B7E in base 20 Raymond Smullyan, a Mathematician, Philosopher and author of several outstanding books of logical puzzles, tells, in one of his books, a revealing story. A friend invited him for dinner. He told Smullyan that his teenage son was crazy about Smullyan's books and could not wait to meet him. Having told this story, would it be wise to announce up front what this site is about? |Contact||Front page||Index||Store|
Frozen Bubble - the official home Ultimate Tic-Tac-Toe Updated 7/16/2013 – See Original Here Once at a picnic, I saw mathematicians crowding around the last game I would have expected: Tic-tac-toe. As you may have discovered yourself, tic-tac-toe is terminally dull. There’s no room for creativity or insight. But the mathematicians at the picnic played a more sophisticated version. As I watched, the basic rules emerged quickly. Each turn, you mark one of the small squares. But it took a while for the most important rule in the game to dawn on me: You don’t get to pick which of the nine boards to play on. Then your next move must be here… This lends the game a strategic element. The resulting scenarios look bizarre. A few clarifying rules are necessary: What if my opponent sends me to a board that’s already been won? What if one of the small boards results in a tie? When I see my students playing tic-tac-toe, I resist the urge to roll my eyes, and I teach them this game instead. Anyway, that’s Ultimate Tic-Tac-Toe. Like this: Like Loading...
Maths Online - Free Maths Tuition For All Australian High School Students Color Sudoku Puzzle Color Sudoku Puzzle Description: Fill all of empty squares in the grid with a picture. Each picture may appear only once in each row, column, and 3x3 box. Each puzzle has only one solution. If you get stuck, you can click the 'give me a hint' button and any errors you have made will be highlighted in red; or if you've made no mistakes, a green square will show where you can go next. If you try to place a picture where it already exists on that row, column, or small square, both occurrences will be highlighted in red. Instructions: Category: Sudoku Puzzles Note: This game requires Java. Khan Academy Math Games - HOODA MATH - Over 500 Math Games