TED Talks
Ted: Ted Ed: Why Is Yawning Contagious?
*Yaaawwwwwn* Did just reading the word make you feel like yawning yourself? Known as contagious yawning, the reasons behind this phenomenon have been attributed to both the physiological and psychological. It's been observed in children...
PBS
Pbs Teachers: Scientific American: Life's Little Questions: Investigate the Yawn
Explore observational psychology by conducting an informal study on yawning. Present an oral essay before a group while continually interrupting the talk with yawns, observe the reactions of the audience and ask them to explain their...
University of Washington
Neuroscience for Kids: Biological Rhythms
Site contains experiments students can do in the classroom to enhance their understanding of biological rhythms.