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My son is so curious about the world these days so I'm looking for science experiment ideas to do with my 7 year old
by: Lauren on 11.13.2012
Try this one out - the outcome is beautiful too!
posted by: Josephine on 11.15.2012
Here's one to teach kids about absorption with just a few basic ingredients. Grab 3 clear cups, water, food coloring, & paper towels. Line up the cups and fill the 1st and 3rd cups with water. Put blue coloring in the first cup and yellow coloring in the 3rd cup. Roll up a paper towel and bend it so that one end is in the blue cup and the other end is in the empty middle cup. Roll up another paper towel and place one end in the yellow cup and the other end in the middle cup. Watch as the paper towels absorb the colored water and mix into the middle cup to make green water!
posted by: Jenny on 11.13.2012
Thanks Jenny - we have all these basic ingredients at home so we'll do it this weekend!
posted by: Lauren on 11.15.2012
This is one of the most dramatic ones I've seen with common household materials:
posted by: Yael on 11.13.2012
Set up a few identical plastic bottles and fill them with different amounts of water. When your blow across the tops of each, the pitch sounds different (less water/more air = slower air vibration = lower pitch)
posted by: Jess on 11.13.2012