• observe and compare the behavior of model catapults
• explore and identify the variables of the flipper system
• measure the height and distance an object travels
• compare results of their experiments to a standard launch
• conduct multiple trials of the same variable and calculate averages of the outcomes
• create two-coordinate graphs to display the results of experiments
• use scientific thinking processes to conduct investigations and build explanations: observing, communicating, comparing, organizing, and relating
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