Summary: A fast-paced, yet catching video that gives a brief overview of various scientific views regarding theories of Realism and Materialism, which were popular around the turn of the 20th Century. With the advent of Quantum Mechanics in 1925, those theories were literally put to the test by the likes of Albert Einstein and Erwin Schrödinger. An animated version of the Schrödinger experiment is included with explanations by Michio Kaku, Theoretical Physicist. Amazingly enough, the video concludes by pointing to an architect behind the design of Quantum Mechanics; an Intelligent Design, if you will. Quality: The content may be a bit much at first, but students will enjoy the quick pace, animations, and graphics associated with this lesson on Quantum Mechanics. This is a well done video, however, because it covers so much in such a short time, it would be important for students to have some foundational knowledge of these concepts before presenting this video as it would be best as a supplemental source.

Podcast of Einstein's Theory of Special Relativity: Summary: This podcast with Fraser Cain, publisher of Universe Today, and Astronomer, Dr. Pamela Gay, discusses examples of Einstein's Theory of Special Relativity to help us understand the concepts. The illustrations contained within depict the relationship between time and the speed of light or better yet, how time is affected by travelling at the speed of light. A little bit of a history lesson is included to share the evolution of these types of theories. Quality: The quality of this resource is at a high level. Dr. Gay is a credible, well-known Astronomer from the University of Southern Illinois Edwardsville. She has participated in panel discussions with the likes of Astrophysicist, Neil DeGrasse Tyson, and Theoretical Physicist, Lawrence Krauss. A transcript of this podcast is included making it easy to follow along, which can bring greater understanding of the subject matter as well.

Simply for fun! This video compilation includes a number of clips from movies related to time travel like "Back to the Future", "12 Monkeys", "The Terminator", "The Time Machine", "Planet of the Apes", to name a few to provide a humorous look at the topic of time travel over the years. This might be fun to watch at the beginning of a physics class and then move deeper into the subject matter discovering what is actually true or possible by the laws of physics.

Summary: In this short video, Michio Kaku, theoretical physicist from City College of New York, discusses the reality behind the theory of time travel. Dr. Kaku states that there really is no law preventing time travel and describes how Einstein likened time to a river, which may fork, or have whirlpools, or even bend. He gives the example of time travel with a wormhole defining it as a shortcut between two points in time using Alice in Wonderland's Through the Looking Glass as a potential example of a wormhole. Quality: Educated at University of California Berkeley and Harvard University, Dr. Kaku is the Henry Semat Professor of Theoretical Physics at City College in New York. He has written numerous books, appeared on TV shows and been included in a variety of documentaries. He shares concepts of physics in ways lay people can understand using examples to which high schoolers can relate. It would be a nice tie-in to have the high school English class read Alice in Wonderland's Through the Looking Glass and then discuss the physics of the story in science class.

Summary: Spaceplace is a website that includes a number of scenarios to demonstrate the potential for time travel. Einstein's Special Relativity is described in a understandable way as the site is basic, not only in its explanations, but also in its graphics, which may make it easier for students to understand. The site is related to or sponsored by NASA and includes a link at the bottom to show how NASA is practically applying these principles in one of their space stations. Quality: This site is a bit more basic than the others listed, which may make it easier for students to grasp the physics concepts contained within. Spaceplace might be considered a good starting place as it is more an introduction to physics and the ideas associated with time travel, time paradoxes, and relativity.

Summary: Put out by NASA's Glenn Research Center, this website discusses what we know and don't know about science as it relates to the implications of time travel. What we know at this point in time (no pun intended), is that faster than light travel is not possible. The site also mentions other theories such as wormholes and quantum paradoxes, which have not been proven yet as viable options. The site adds that time travel is considered far more impossible than light travel. Quality: Having been complied by scientists at NASA's Glenn Research Center, this website is thorough and credible in its discussion of the possibility of time travel and the applicable Rules of Special Relativity. The site also includes some graphics to aid in understanding the basics of Special Relativity and links to other NASA related topics for further study.