Khan Academy
Khan Academy: Theories of the Early Stages of Language Acquisition
Language is the primary method of human communication, but there are also other ways to communicate without the use of language. Language in its most complex form is unique to humans, although some animals have been found to have basic...
Scholastic
Scholastic: Math Maven's Mysteries
Scholastic.com offers information on how to use the Math Maven's Mysteries to enhance problem-solving skills, partly through class discussion. For the actual mysteries, click on Math Maven Home.
California Academy of Sciences
California Academy of Sciences: Facial Expressions
Are facial expressions learned or innate? [2:58]