Techtonic Oreo

https://dusk.geo.orst.edu/oceans/Oreo-Cookie.pdf

The link will take you to a pdf created by a professor at Oregon State University.   He uses Oreo cookies to do simple demonstrations of basic plate movements.   For students in school being able to eat the demonstration adds to their enjoyment of the topic.   I know if warm Oreo cookies were the center of the lesson I would focus diligently in order to get to the point where all the “crust and magma” gets recycled.

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