If you ever finish an activity early, any and all of these websites are approved places for you to spend some time.  You won't even realize that you're learning something!

Fantastic Contraption

  http://fantasticcontraption.com/                                        A puzzle game used to practice planning and design.

National Geographic Games

Games | National Geographic Channel- National Geographic Channel         Some really cool games, simulations and activities on this site.

News for your Neurons

    Wired Science - News for Your Neurons | Wired.com                            Cool current events from all corners of the realm of science.