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Anonymous
Anonymous asks:
Q:

what is a  good project for a 4th grader who has to use measured variables and can not use live plants, animals, or any type of bacteria?

In Topics: Science fair, Helping my child with science
> 60 days ago

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chemteacher
chemteacher writes:
You could try making cookies with different amounts of flour, sugar, or butter. Be sure to change only one ingredient (I would try cookies with different amounts of flour). If you start with half the amount of flour, then move to 3/4, then the full amount, then 1 1/2 the amount, etc you will see a difference in both the raw dough and the baked cookie. You could do a 2nd trial with varying the amount of sugar added each time from none to twice the amount. Be sure to get pictures along the way so you can pick a "scale" for change. It will be easier to document the changes in variables versus the final outcome. Any recipe will work, just be sure to only change one variable at a time.
> 60 days ago

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mommickey
mommickey writes:
how about bugs or use different containers and put water in them for measure
> 60 days ago

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RyanTraynor
RyanTraynor writes:
Try energy related projects such as a catapult or trebuchet.  To kids this seems like a toy but it shows them the laws of motion.  Good luck!
> 60 days ago

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