Does anyone know any good brain teasers? They can be math or language related ones. They need to be appropriate for ages 9-14. I need them for a camp I'm planning. Any ideas would be much appreciated! Thanks!

_________________
Not this time, nancy-boy!

there is a house, the house has 3 light bulbs and 3 light switches, bulbs are upstairs switches are down stairs, you have one chance to go up stairs, but only one, how can you tell what bulb goes to what switch?

i forgot to mention you have 25 minutes before the house blows up and you die.

hint, not only does a bulb produce light, but heat as well

answer, leave one switch on for 15 minutes or so and turn it off, turn the second one on and walk up stairs, check around and the bulb thats hot is to the first switch, bulb thats on is to the second and bulb thats off is to the third, puzzle solved, and you can escape jigsaws hands with your life.

This is kind of easy but it actually stumps some people

Which of your grandpa's boys is not your uncle?

I'm my own grandpa?

(Maybe your dad?...maybe)

_________________

Hobbes got it right

Sorry for OT, but was that from Futurama, Hobbes? :P

_________________
[In Yarr we trust.]