This PBL is super easy to implement. I have included 1-2 investigations for each simple machine. Students have a Scientific Notebook to record their data for each investigation. Each investigation includes a materials list and directions. The PBL concludes with students using what they learned from their investigations to create a machine using at least 2 simple machines. An Inventor's Journal is also included to prompt students with revising their machine.
On a time crunch? This PBL can be completed in 2 weeks. If you set up the investigations as centers, students can complete all 8 investigations in a week and they can work on their inventions the following week.
This PBL is easy to use in the primary classroom but contains complex problem solving that is also appropriate for intermediate grades.
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