(http://www.tryscience.org/) 
Try Science gives parents, teachers, students, scientists or anyone with an interest in science exciting ways to experience science and technology. The Adventures section has interactive online games that allow players to discover the science behind sports, different environments, and engineering. The Field Trips section is a searchable database of science centers around the world. The Experiments section has a wide variety of offline experiments for students to try, each with an online component.