Your students, parents, and colleagues can follow what's happening in your class on their cell phones by connecting to you via twitter.

PBIS 2010 school year kick off video.

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Recent discoveries from across the universe.

Cool experiment for science class.

This video explains why teachers should use web 2.0 in the classroom.

Galileo Galilei (15 February 1564 -- 8 January 1642) was an Italian physicist, mathematician, astronomer, and philosopher who is closely associated with the scientific revolution.

This video explains electricity as the flow of atomic particles called electrons. Animations demonstrate electron flow. Batteries are described as chemical devices designed to create electron flow. Terms covered in video include Volts, current and Amperes.

His "Last Lecture" video had become massively popular on the internet, and has inspired many all over the world. Randy Pausch 1960 - 2008.

Moving Towards a Positive Future from Florida's Positive Behavior Support Project

The Moon passing directly in front of the Earth, a view impossible to see from the Earth itself.

Stunning images of some of the most amazing landscapes you will ever see.

Make a Cheap Multitouch Pad for under $ 20.

A few great quotes by great men and women.

Scientists from Penn State claim to have found a new living bacterial species a couple of miles into the Greenland ice sheet. They estimate that the bacteria have been trapped there for about 120,000 years.

Schoolhouse Rock - The Shot Heard Round the World. The start of the American Revolution!

Student's Rap about Schoolwide Positive Behavior Support. Provided by Oakdale Primary School in Tuscaloosa, Alabama.

How to multiply negative exponents.

Live Stream from Africa, Nkorho Pan.

History is packed with mysteries to be solved. See how historians connect the past to the present and help us find our way into the future

Bill of Rights Rap to help students remember the first 10 amendments to the constitution.

The Solar System's birth was far from peaceful. Witness the spectacular explosion known as the "Big Bang".

Some of the world's most famous artists and paintings set to Elton John's This song has no title.

Great web portal for teacher resources.

Moon's 8 phases in animation style.