This is something I prepared and presented for grade school students who were visiting my high school on a field trip.
It is a fun presentation appropriate and usable for a wide range of grades
either on-site or while doing visits to other sites/schools.
It is an adaptation of a very widely used demonstration, put into a clear presentation that can be delivered via powerpoint, notebook, or even PDFs.
I posted it here for myself as a future reference and for others to make use of. You are free to edit and use within your own classroom as you see fit.
Keep up all that you do as a teacher and catalyst for learning!
The Preview file shows the same general content as the download files, which also includes powerpoint and Smart notebook versions.
Thanks, and Enjoy!