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Rating: 5 stars
Used in Course: Not used in course
Submitted by: Rose Marie Nario (Student), Sep 13, 2009
Comment: Of all the link I have gone thru so far in Mathematics link, this Cut-the-Knot is one of web link that I will definitely will go back. It has very broad mathematical puzzles for all different mathematical subjects. I just tried the hour glass timing and was impressed on other people posting different solutions to the puzzle. Highly recommended to high school/college students.