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Fourth Grade Videos (1,202 results)

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http://www.ted.com With wisdom and wit, Anupam Mishra talks about the amazing feats of engineering built centuries ago by the people of India's Golden Desert to harvest water. These structures are still used today -- and are often superior to modern water megaprojects. TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes. Featured speakers have included Al Gore on…
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After youve spent weeks and months crafting, calculating and calibrating your project, strangers arrives to evaluate your baby up and down. Not to worry; these folks are actually science fair judges. Theyre nice, professional and really, really smart. And they are interested in you. Just be yourself, answer their questions candidly, and embrace both their compliments and ideas. Remember, theyre learning from you, too, science superstar. You may well become the worlds expert in your area!
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Here is what is really wonderful about science fairs: You participate because you want to participate. You choose your own project because its something you want to explore. You make it work. And because a science fair project allows you to test drive a college major or a career; it gives you training wheels for the real world. Also, science fairs connect you to new friends and can distinguish your future college application. Finally, science fairs are fun roll-up-your-sleeve,…
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Bass Guitar strings filmed in 1200 frames per second slow motion. Notice the secondary wave travelling up and down the length of the string on top of the other vibrations. The string also twists in a third wave that travels up and down the string if you look closely.
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Some Universities try to replicate a 1997 Greek patent! This is the first footage made by BBC World during the execution of the European Project "CLEANMAG : Demonstration and Large Scale application of the magnetic technology for the cleanup of waterborne oil spills" (LIFE99 ENV/GR/567) The method is basically using a magnetic POROUS material (so is floating all the times) which is olleophillic (sorbs only oily substances and not water). The amount of sorbtion is up to 10 times the weight of…
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Rapper MC Lars challenges teens to learn CPR and Be The Beat.
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Normal blood pressure is important for proper blood flow to the body’s organs and tissues. The force of the blood on the walls of the arteries is called blood pressure. Blood pressure is measured both as the heart contracts, which is called systole, and as it relaxes, which is called diastole. Normal blood pressure is considered to be a systolic blood pressure of 115 millimeters of mercury a diastolic pressure of 70 millimeters of mercury (stated as "115 over 70"). If an individual were to have…
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In this video, the learner can see how the Cas9-guideRNA complex cleaves DNA visualized in real-time using atomic force microscopy. Video originally from: Real-space and real-time dynamics of CRISPR-Cas9 visualized by high-speed atomic force microscopy. Nat. Commun, 2017, Vol.8(1), pp.1430-1430 DOI: 10.1038/s41467-017-01466-8 View this video (and more like it) on LabXchange: https://www.labxchange.org/
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Free science fair projects.