Site | Comments | Location | Rating |

Los Alamos Mega-Math project | Los Alamos | G | |

Naor's puzzler | Moni Naor's collection of Math puzzles | Weizmann Inst. | X |

The MathSoft Puzzle Page | Cambridge, MA, USA | R | |

Physics Quiz | Germany | PG | |

Challenge | Physics Challenges | Duke University, USA | PG |

NRICH math online club | Cambridge University, England | G | |

BrainTeasers by Quantum Journal | Nat.Sc. Teachers Assoc. (US) | G | |

Physics Prob. Collection by A. Melikidze | Princeton University, NJ, USA | R | |

"Ponder this" - math puzzles | IBM (T.J. Watson) Res.Labs, NY,USA | R | |

"Physics of the outdoors" by S.M. van Roode | The Netherlands | R | |

Ortvay | Yearly Physics Competition | Hungary | R |

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If you know an address of an additional site with physics/math problems or puzzles, please mail the address to

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