Sat, Feb 04, 2012 4:15 PM in PS Questions with activity that I found
Bubbles cannot be square because of the surface tension. Basically, a bubble is not strong enough to be square and hold that shape. When you blow a bubble, the air is equally distributed. A cool lesson to do is give the kids differnt objects to make the bubbles, wire coat hanger, straws, etc. This will demonstrate that no matter what you use, the bubble will always come out as a sphere.
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Sat, Feb 04, 2012 4:06 PM in Science Songs
At http://brambarker.com/scirave/scirave.html you can find SciRave Music. It's free and includes the lyrics. Hope this helps!
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Sat, Feb 04, 2012 3:54 PM in Bottle Rockets
If you go to www.ehow.com, there are a few plans that tell you how to build a bottle rocket. It is geared toward foruth graders. I have made rockets out of a plastic straw, paper, and tape with my first graders. We went out to an open field, and the students blew into the straw and we measured the distance.
A really fun, hands on activity.
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