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In catapults we changed one variable at a time! The main variables the we changed were the height and the distance.We changed the height of the catapult,then we changed the length of the flip stick for distance!!!! When we were testing height I think the variable that made the most difference was when we changed the length of the popsicle stick!! The popsicle sick is actually called a flip stiick when we used it for catapults! When we were testing for distance I think the variable that made the most difference was when we changed the height of the catapult!!
What makes a controlled expeirement is you have to be organized, only change one variable at a time, and you have to know what your doing!! If you don't do those the experement will go bad. You don't wqant to have your experement go bad!! Well go to go!!
Article posted November 9, 2007 at 05:14 PM •
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