Looking for some good science fair projects

What color crayon do Kindergarteners use most?

Ask one of the Kindergarten teachers at the school if she will participate.Buy enough crayons at the dollar store for the class. Allow them to use those crayons only for 1 week. At the end of the week collect the crayons and measure to see which color has been used the most.
 
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One easy project is to take several mason jars and collect soil samples from different areas (backyard, garden bed, playground, etc). Fill about 2/3 full of soil and fill with water. Put the lid on and shake the jars and let the sit on the counter overnight. The soils will settle by grain size (going from bottom up: gravel, sand, silt, clay and organics). Then the different samples can be compared and explained with they differ (playground with primarily coarse sand vs garden with lots of organics, etc).
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Listen to her. She be a brainiac.

I did this in elementary school or middle school...don't remember. I grew up to be a geologist, go figure, so of course it seems like a good idea to me.
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Too bad it took me 10 yrs after HS to realize it.
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Oh!!! There is one you will have to look up online, but it involves cutting a potato in half and using the white meat part (still wet...not dried out) to light a light bulb.
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Quote:
Listen to her. She be a brainiac.

I did this in elementary school or middle school...don't remember. I grew up to be a geologist, go figure, so of course it seems like a good idea to me.
lol.png
Too bad it took me 10 yrs after HS to realize it.
roll.png



Oh!!! There is one you will have to look up online, but it involves cutting a potato in half and using the white meat part (still wet...not dried out) to light a light bulb.
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See? I told ya - she is a brainiac.
 
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Well, it didn't come from a website, it came from my 12 year old's brain. Funny thing is, his father and I both tried to talk him out of it thinking the project would never win.
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He was right, we were wrong... 1st place.

Details: buy one red cabbage-- about $1, and the three bottles of cleaner. The idea of choosing a "green" cleaner might just be mixing white vinegar/water in an old spray bottle to compare with say, Windex, or another all purpose cleaner. I chose 3 off the shelf items because I was following darling son's instructions.
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The first test was easy: price. We compared the price of the "green" choice, the 409 cleaner, and the super-cleaner "Kaboom". We made a bar chart of prices.
The second test was actual cleaning. I think we used each cleaner on dirt, grass stain, and marker-- each on the same plastic surface (we used a plastic paper plate.) We took photos of the results. We made a bar chart which showed which cleaner worked the best on which type of soiled surface.
The last test was to boil the cabbage with about 2 cups of water. The water will turn beet red, and will dye ANYTHING so be careful. We placed the cooled dye in 3 clear cups and added about 1/8 cup of each cleaner to the dye. You'll have to google to be certain, but I believe the most acidic will turn blue, the least acidic will not turn colors. (Please google to make certain of the color change). On this test, we took photos and based our idea of "safest" cleaner on the least acidic.
Darling son made a stand-up chart with a cardboard presentation board, pasted the photos and charts. In front of the cardboard, we had the 3 glasses of red-dye with cleaner, and the 3 bottles.
If you have more questions, feel free to PM me. He loved the 'cabbage' indicator test, felt like a scientist.
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I can't think of a better project for young kids than learning how to raise chickens from egg to nestbox. There's lots of things to know and do concerning chooks...

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