The silverback gorilla is a special animal. This magnificent male is part of an endangered species. Complete this sheet to learn all about this gentle giant.

Learn some new words and facts about precious minerals with this word-scramble and matching worksheet.

Identify the appearance of the moon during its three main phases which include the New Moon, Quarter Moon, and Full Moon.

The California condor has been brought back from the brink of extinction. This worksheet will help your little bird lover learn all about the condor.