Pzzls
http://www.pzzls.com
Grade: B

Date reviewed: 10/28/05

Pzzls is primarily a mix of original and classic math puzzles and riddles. If you are a high school teacher looking for extra credit problems for your students, you may find this a useful resource. If you are a math puzzle aficionado, you will probably have heard of many of these (i.e., if a group of 9 people shake hands, how many handshakes take place?).

The riddles (or as the site calls them, Puzzling Puzzles) range from groaners - what has 4 legs and only 1 foot? - to classics. A few of them, enjoyably, were true brain-wrackers.

The site also has an area devoted to "Science" puzzles, but at the time of this writing, it only contains 5 puzzles, 2 of which are pure math and 1 of which is simply an optical illusion.

In fact, although this site has apparently been around since 1999, it contains less than 60 puzzles altogether. There are signs that the webmaster is recently making efforts to expand the collection, so check in to see if it grows!