Jun 18
2007

Water Flowing Uphill?

Educating
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Not exactly… but this stuff is really cool. It’s probably best described as a self-siphoning gel. The chemical is called polyethylene oxide or Polyox and it has an incredibly large molecular weight - about 4 million. When the powder is mixed with water (that’s the tricky part), the liquid becomes very thick and will literally siphon itself from one container to another. As a kid I order a product called Moon Blob - “The Gravity Defying Gel” - which promised to do the same thing. It did… but now I’m doing it as an adult! It’s tough to explain it… just watch the Polyox video.

Popularity: 61% [?]


May 08
2007

Young Rocket Scientists Inspired by Homer Hickam

Educating
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picture-11.pngOnly a very cool teacher gives this kind of homework to her students… “Using only construction paper and tape, I want you to design a rocket.” Lisa Heaton, the Gifted and Talented teacher showed her students a specially designed rocket launcher made out of PVC plumbing parts from the local hardware store. The idea for the PVC rocket launcher comes from U.S. Space Camp for Educators curriculum. I had the privilege of assisting Mrs. Heaton with the launch of the paper rockets. As the students will share in the comments below, the first launch revealed their design strengths and flaws. The five students with the best launch served as mentors for the rest of the students as they returned to the classroom to repair and redesign their paper rockets. The second launch proved to be the real learning experience - be sure to read comments from the young rocketeers below.

picture-12.png“This rocket launch activity coincides with the students reading Rocket Boys (also known as October Sky) by Homer Hickam. I want these kids to experience first hand the feeling of failure and success through the trial and error process of building their own rockets… and this air-powered rocket launcher does the trick,” says Lisa Heaton as she turns to help a 5th grader repair a rocket that didn’t fair well during the first launch.

These 5th graders are also using this hands-on science experience to learn about the science of blogging (pun intended). Student bloggers from Mrs. Heaton’s class in past years posted blog comments about their rocket experience that were even read by Homer Hickam (the author of October Sky) himself. Be sure to read the student comments below.

Popularity: 55% [?]