Science Experiment For Kids

Question: I need a fun science experiment to do with kids.?
I need a fun science experiment that I have to do with 3 different groups of kids of different ages. I have about 10 kids in each group.
The groups are 1st and 2nd graders, 3rd and 4th graders, and 5th through 8th graders. I will be working with each of them for about 1 hour a piece.
I have done many other experiments with them throughout the year but I’ve done just about everything. If anyone has some suggestions I’m willing to hear them. Maybe I haven’t tried your idea yet.
Your answers are appreciated.
Answer: These links might give you some ideas:
http://www.crystal-clear-science-fair-projects.com/science-projects-for-kids.html
http://www.exploratorium.edu/afterschool/activities/index.php
http://www.sciencebuddies.org/
http://www.all-science-fair-projects.com/category0.html
http://www.ipl.org/div/projectguide/
http://www.picadome.fcps.net/lab/sci_fair/science_fair.htm
http://www.scienceproject.com/
http://www.freesciencefairproject.com/
http://www.hometrainingtools.com/articles/acat_science-projects.html
http://www.usc.edu/CSSF/Resources/GettingStarted.html
Science Experiments For Kids – Marbled Milk