This 4-page lab was created to accompany a pumpkin launching (aka pumpkin chucking) that we did with a catapult that a colleague’s husband built. I tied in math and science, with students forming hypothesis about the distance the pumpkins would travel, collecting data, estimating distances based on the results of the largest and smallest pumpkins, comparing data, measuring distances to find actual distances, finding differences between actual and estimated differences, recording data based on observations, drawing conclusions, identifying variables, and planning for future experiments. You will need at least 5 pumpkins to use this resource, and it's helpful if they are all of different sizes.
Ideas for building the catapult can be found by simply typing “pumpkin catapult” in to Google. Once you have it built, print out these sheets and get ready to give your students an experience that they will never forget.
You can find more information on this lab on my blog at: http://mrsoknows.blogspot.com/2013/10/geography-science-math-and-pumpkinsoh-my.html