Believe it or not, some dinosaurs are not extinct. Discover this and other interesting facts about dinosaurs in a 10-question online quiz. As individuals answer questions, the resource provides them with feedback and additional facts...

Time to rock and roll! Young scientists test their knowledge about rocks found on Earth and what they tell scientists. A 10-question quiz focuses on the different types of rocks, how they are formed, and what they are made of.

Scholars predict the sound of a tyrannosaurus rex roar with a mixing board equipped with audio from crocodiles, chickens, loon, macaw, peccary, sea lion, and bison.