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Mineral Density: Teaching accuracy, slope, and percent error in the Earth science classroom
Mary Colson Horizon Middle School Moorhead, MN
This activity is a lab investigation in which students make mass/volume measurements of several samples of the same mineral to determine the mineral's density. Students graph their data and make the connection between their qualitative understanding of what density is and the mathematical/graphical representation of density.
The physics and engineering of a trebuchet
Brad Hubred, Little Falls Community Middle School, Little Falls, MN Some of the activities for this lesson are from the activity book called "Trebuchet's teacher's guide" by: Jennifer Fenske, published by: Pitsco, Inc. in 2006.
This activity is a hands on investigation in which students will construct, and launch a trebuchet.