How to Add Negative Numbers
This is a video that demonstrates how to add negative numbers.  It is done in a slightly humorous way.  One advantage of this video is that it displays a number line when the math problems are being explained so that viewers can see how negative numbers are added.

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Introduction to Order of Operations Part 2
This is a continuation of part 1. The problem they are working on was introduced in part 1, they are working through all the rules of order of operations. They are continue to work on examples. Video is good quality and good for all students as review or initial learning of concept.
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More Complicated Order of Operations Example - Khan Academy
This video starts off with a black screen because the narrator uses it as a 'chalkboard'. In an easy, conversational tone, the instructor demonstrates how to solve a more, complicated, longer equation. (05:20)
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Handwriting Recognition
This video tutorial demonstrates how to use the handwriting recognition features of Notebook which convert block or cursive handwriting into text. (2:25)

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Computer Virus
This video explains what a virus is. (0:58)
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The Rhyme Time Song - Hooked on Phonics
This catchy song tells all about rhyming words. It explains how to know if two words rhyme ("listen to the ending") and presents photos of many pairs of rhyming words. (1:50)
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Simple Machines - Song
This video is a song set to the tune ofÂ "Sound of Music".Â  LyricsÂ and pictures includeÂ all of the simple machines and how they are used in every day life. Run time 01:15.
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Science Olympiad Scrambler Brakes
A common event at Science Olympiad competitions is the Scrambler. The Scrambler must be a vehicle designed to use a falling mass to transport an egg a particular distance that students will be informed of only at the time of the event. This video displays a fairly simple braking system that is very beneficial to student success. Run time :20
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Energy Quest: Interactive Game
A highly entertaining and educational site where the students click on various objects to learn about them and their energy sources. Lots of information, but although the site is designed for younger students, the content is mainly for grades 4 and up.
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Harvestmen (Daddy Long Legs)
This puppet in Saluki, the puppet, introduces some basic facts about harvestmen, with some neat video of a group of harvestmen breaking up. These arachnids are called either Opiliones, Harvestmen, or Daddy Long Legs. From http://TorridonKennel.com/ This video won a \$500 WatchKnow "pre-contest" prize in 2008, when we were originally designing WatchKnow!Â  (CAUTION: This video contains the mention of a male body part.) Run time 03:31
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Jumping Spider
The footage in this amazing video shows how a jumping spider is able to capture prey without the use of a spider web. Run time 01:26.
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Idioms in ASL - From A to Z
English idioms are presented in American Sign Language through skits that demonstrate the meaning of the idiom. A project from Kentucky School for the Deaf. *Open captioned for hearing students. (0:33)
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ABC News Report - Earth Day
What is Earth Day and how can you help?  Environmental lifestyle expert Danny Seo shares ways to save the planet and how many companies are doing their part. (06:50)
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This video from natgeotv.com show an amazing selection of their favorite butterfly photos submitted to MY SHOT by National Geographic readers.  These photos are absolutely incredible, and are run like a slideshow and set to music.  AWESOME!

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The Hydrologic Cycle
Water continuously travels between Earth's surface and the atmosphere via the hydrologic cycle. Through five main processes â€” condensation, precipitation, infiltration, runoff, and evapotranspiration â€” water is perpetually recycled. In this interactive resource adapted from NASA, explore the steps of the water cycle. This interactive site does not include any audio.
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The Water Cycle
The water cycle illustrates evaporation and condensation as it occurs around the world to recycle the planet's water. Learn about the the earth's water usage with important facts from a science teacher. (01:33)
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The Hydro Logic Cycle
The speaker in this video explains that water never disappears -- it just reappearsÂ as a different state of matter. The background in the video is a bit distracting. (01:17)
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The Water Cycle - by StudyJams
The water cycle is the constant movement of water through the Earth and its atmosphere.  Water on the ground evaporates, becoming water vapor.  The vapor rises, becomes clouds, and then falls back to the Earth as rain, snow, sleet, or hail.  Learn more about the water cycle with this cartoon animation from StudyJams.  A short, self-checking quiz is also included with this link.
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An Introduction to Voicethreads
This video shows what a VoiceThread is and how to use it.
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Khalil Gibran, Song of the Rain
Khalil Gibran's song of the rain is set to music by Bach and accompanied by images that are inspirational.
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