Freeschool

An unschooling blog

Archive for the ‘experiments’ Category

Fun Science Videos / Experiments

Posted by freeschool on February 1, 2008

How To Time Travel

Science is fun and educational with Professor Gizmo and his Amazing Science Presentations. You will learn how airplanes fly, how gravity works, where weather comes from and more, through this award-winning science teacher’s zany experiments and the incredible, explosive gizmos he makes out of ordinary household items. Professor Gizmo-Amazing Science Presentations: Fun Science.

Additional videos under Kids Fun and Games.

via Ursi’s Blog

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HOW-TO: Make a LED Display

Posted by freeschool on February 1, 2008

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 The folks at Evil Mad Scientist Laboratories made their own LED pegboard and named it Peggy. You can change the design or message any time you like without rewiring it, and you can program individual lights to go on and off. You can make your own with a kit and some downloadable instructions. Link

via Neatorama

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Home Chemistry Blog

Posted by freeschool on January 12, 2008

New blog discovered!!   Great for homeschoolers and unschoolers doing science at home, the Home Chemistry Blog is written by a homeschooling parent of a 15 and 12 year old.

The Home Chemistry Blog posts experiments they are working on, information about chemistry in general, and more.  They’ve even posted on the GeekDad blog.

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Fun chemical reaction experiment (Briggs-Rauscher Reaction)

Posted by freeschool on January 11, 2008

Here’s an known as the Briggs-Rauscher Reaction, which looks really cool. Basically, when several clear liquids are combined, the mixture quickly changes colors — back and forth — over and over again. The experiment was perfected by high school science teachers in 1973.

What’s happening?

Several reactions take place at once. One of them produces iodine, which gives the amber color. Hydrogen peroxide reduces other chemicals into iodide ions. Along with normal iodine, the charged particles interact with starch to create it a blue-black color. The speeds of those transformations are constantly changing. As one overtakes the other, the color suddenly changes.

Here are directions on how to perform the experiment.

What You’ll Need

Be aware that some of the chemicals involved are dangerous, as specified in the above linked MSDS’s. Use caution and protection such as goggles and gloves. Also note that I am merely bringing this experiment to your attention and am no science expert of any kind. Try this only if you know what you are doing.

via BoingBoing via The Wired Science blog

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