ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
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Even cooler....(or hotter?)...is to do this trick with a wooden match
instead of a toothpick. You put the flammable head of the match inside the
glass, then when everything's on and balanced, you light the head of the
match (with another match)! As long as the object is pretty still the match
will extinguish when the flame reaches the rim of the glass, and the item
will remain balanced! If the thing is rocking around a bit, then the flame
can go past the glass rim enough to cause the object to fall down.
Very cool - but doesn't increase the understanding of center of gravity.
-William
William Katzman
Director of Exhibits
Catawba Science Center
(828) 322-8169 x307
"The Magic of Learning, the Science of Fun"
Now Renting Out
Dinosaurs! (3,000 sq. ft. only $25k)
Body Carnival (2250 sq. ft. only $15k)
Maze Mania (3,000 sq. ft. only $7.5k)
http://www.catawbascience.org/on-exhibit.htm
-----Original Message-----
From: Informal Science Education Network
[mailto:[log in to unmask]] On Behalf Of Eric Yuan
Sent: Tuesday, September 23, 2008 10:29 PM
To: [log in to unmask]
Subject: Re: Center of Gravity
ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related
institutions.
****************************************************************************
*
There's always the parlor trick of balancing a spoon on the end of a
toothpick...
http://tinyurl.com/4cdjh8
Eric
Exhibit Developer
The Children's Museum of NH
-----Original Message-----
From: Informal Science Education Network
[mailto:[log in to unmask]] On Behalf Of Robert Russell
Sent: Tuesday, September 23, 2008 4:49 PM
To: [log in to unmask]
Subject: Re: [ISEN] Center of Gravity
ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related
institutions.
****************************************************************************
*
Two ideas:
1. Have kids build a mobile, which has to be balanced to hang straight. I
think Jay Newlin at the Science Museum of Minnesota designed a nice mobile
creation kit as part of his Workbench project. Not sure if the point was
to
illustrate the center of gravity etc.
2. When I was young, I had a balance; you could hang numbers on either
side. The numbers weighed in proportion to their value (i.e., 2 weighed
twice as
much as 1). So to make the balance even, the numbers on each side had to
add up to the same amount. Maybe you can still find the toy, but if the
concept sounds good, it would not be difficult to design something like
this.
Bob
Robert L. Russell, Ph.D.
Science Advisor, Self-Reliance Foundation
Project Director, Celebra la Ciencia & ConCiencia/Hispanic Science Newswire
(202) 360-4117 (office) (202) 997-5539 (cell)
[log in to unmask]
_www.celebralaciencia.org_ (http://www.celebralaciencia.org/)
_www.selfreliancefoundation.org_ (http://www.selfreliancefoundation.org/)
1126 16th St. NW, Suite 350
Washington, DC 20036
In a message dated 9/23/2008 4:38:50 P.M. Eastern Daylight Time,
[log in to unmask] writes:
ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related
institutions.
****************************************************************************
*
I need help in teaching center of gravity / balance concepts to
elementary students. I'm looking for ways to demonstrate finding the
CoG as well as ways that students can display the concept. Any activity
ideas or background information would be greatly appreciated.
Mary Catherine Campbell
Home School Connections Coordinator
Educational Services Coordinator
PHONE: 602-716-2000 ext 2556 | FAX: 602-716-2088
[log in to unmask]
P Before printing this e-mail think if it is necessary. Think Green!
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