"What is black and white and read or red all over?" Well depending on who you listen to, its either a sunburned zebra or a newspaper. The other day, in one of my google plus groups, someone gave a link to math riddles on Math Warehouse. There are 10 riddles on the page. I looked at these and wow! These are good warm-up/bell ringers for the first 5 to 10 min of school. The 10th problem is the Monty Hall three door problem which can be used after playing a short clip from the television show "Numb3rs".

Next came a search on math riddles so I have a large supply of riddles to use in class. So here are several that I found when I googled "Math Riddles".

1. Good Riddles Now has 28 pages of riddles. Many of the riddles deal with probability so are something out of something.

2. Gpuzzles has quite a few math riddles

3. Kids Math Games has more tongue in cheedk puns than actual mathematical riddles.

4. The University of Virginia has several riddles.

Give some of these problems a shot because they require higher order thinking skills to answer and some are really cute.