Magnetism and magnets comes to mind. You'll need to buy a few things. some bar magents, maybe a small metal plate, a battery, some wire, a switch and a compass.
Some regular bell cord wire from radio shack ($3.95), warp it around a paper tube like a toilet paper roll. Connect one side to a battery in a battery box (AA or 9V) and get a little push button switch (on and off) and position the magnet in front of the coil in the surface of the table. When you press the switch and connect the battery leads it should make the maget change positions from North.
You can also demonstrate how magnets (like those on your frigde) stick to that metal plate.
You can also get a little light weight shoe type box and put some iron filings in it and put a magnet under neath and show of the filligns collect around the magent.
This whole things shouldn't cost more than $15
Then you can put some some text information on magentics and this would be a hands on process. Maybe you can leave the bar magnet below the box with a string tied to it and have them put it under the box and gently shake the iron particles.
You can have them push the button and make the compass move (remember to position the compass so North is away from the coil of wire.
It shows how electricity generates electro magnetic waves.
You can also put two magnets on the base board and show how one magnet repells the other or attracts it. Show magnetic polarity.
2006-09-30 16:27:41
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answer #1
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answered by Anonymous
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These are always a challenge. First remember the display tells about what you did and does not have contain the actual equipment or experimental set up. The best projects are those that fit into the interest of the child. Experimental is best and to be experimental you have to answer a question. Also, remember numbers. Do something that in some way will give you numbers, how many , how high, how long, how fast, how hot, how much. Numbers in metric also. Do not try to do conversions just use metric and keep it at that. The best projects take more than one event to do. Repeat the experiment several times or perform the study or data collecting over several trials. Go to a science fair web site and get a copy of the many examples. So sit down with your 3rd grader find out what they are interested in help , coach, carry and haul but let them do the work and prepare the display. Keep it fun, and with in the limits of a third grade attention span. Which brand of popcorn is the best value, do not choose taste best that is to subjective and to hard to get numbers. What paper airplane design flies the farthest, the highest. etc. When picking a project be sure to keep to one question kids always end up test two or three. be sure that you have two variables in your experiment, one you change ( brands of pop corn) (design of paper airplanes) the others stay the same (amount of kernals, time in the microwave, etc.; force to launch plane, room you fly them in, type of paper, weight of plane, etc.) Good luck and email me if you need more help. Have fun!
2006-09-29 09:03:42
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answer #2
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answered by Geo 6
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coming up with science fair projects is tough, but i'm sure there is a book with really good (and really easy) ideas in your town library. you should pick something that will make sense to your kid though, as that is the goal of science experiments...maybe if you see something in the book that she learned about in class. if you can't find a book, you can always go with the basic boring biology experiment where you plant a few bean plant seeds each in their own little pot and grow them, measuring their height every so often for results. in order for it to be an experiment you need a control group (plants exposed to a given set of conditions) and a variable group (plants exposed to some extra condition - maybe you grow this group of plants where there is no light, while the control group is grown near a window). your will see that sunlight makes plants grow taller. that is good 3rd grade stuff. but i would still go to the library or a bookstore and find a book of kid's experiments...it might be more fun. whatever you do make sure that your kid will comprehend the basics of what is going on...volcanic erruptions and wave motion stuff is a little advanced. the experiment should be basic.
2006-09-29 08:27:40
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answer #3
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answered by keith 2
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Project 1: Dye the water in a vase a certain color (food dye). Then put a carnation (works the best) into the water. After 5 days or so the flower should change color. Project 2: Put vinegar and baking soda into an empty water bottle. Put a latex balloon on top of bottle. Then shake it up. The balloon should inflate.
2016-03-18 02:46:37
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answer #4
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answered by Anonymous
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Look on line for simple science projects. You will get details on how to make a simple catapult with a plastic spoon, a piece of wood, and rubberbands. It is always a big hit. The test could be how far different objects go....and why. Have marshmallows, chips, paper, etc.
2006-09-29 12:46:23
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answer #5
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answered by heartwhisperer2000 5
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Just my suggestion - we did this in grade 9 and it was pretty neat.
You take a few brands of toothpaste and cover half of an egg with each one, then soak in vinegar for 24 hours and clean off the toothpaste to see how well each one protected the egg. We had a lot of fun doing this one, though since it was class-wide we did it in pairs and only got to try one kind of toothpaste each. 4-6 kinds would make for a neat science fair display demonstrating the effectiveness of different brands.
2006-09-29 09:15:11
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answer #6
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answered by o0_ithilwen_0o 3
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She can have 3 different plants and each one is exposed to different music e.g., rock, classical, country, and see which one does better. Or she can see which baggy works better for keeping mold low. Have about 3 or 4 differnt baggy brand put a slice of bread in each, and see which one molds faster. She can also do a liquid nitrogen ice cream project. Or buoyancy, have a glass of water and put differnt bases (soap in one, vinegar in another.) then place an egg in each and see which one is buoyant and why.
2006-09-29 11:23:27
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answer #7
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answered by puertofrican 3
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My dad was a Science Teacher and one he taught me was with a milk jug, a bowl, and water. (it is suppose to go long with dams) You poke a hold on the side bottom of the jug and poke a hole at the top. You fill it with water (while plugging the holes) it is suppose to resemble a dam. With the amount of pressure that pulls from a dam. When you unplug the holes, you can see which one has the most amount of pressure and how far they go. I looked up in google to see if there was a better example. Go to this site, it will help. And good luck!
2006-09-29 10:55:59
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answer #8
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answered by Anonymous
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When I was her age I obtained enterence to a bug lab and made a report on bugs/insect from around the world. I was able to get real samples. I labled and looked up each but I had and took pictures of live ones that I wasn't able to take with me.
2006-09-29 08:58:05
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answer #9
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answered by erinjl123456 6
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Wind tunnel, the affects of combining certain chemicals (amonia and bleach for instance or peroxide and baking soda). I've added a few of science fair sites you might look into
2006-09-30 21:16:27
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answer #10
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answered by Anonymous
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