Living in NW Colorado, the balloon stretched over a can actually does shoe significant movement this time of year!
However, using weather maps with the "contour" lines of pressure bring home the usefulness of the concept a bit more with my juniors and seniors--I teach high school students.
Sorry I don't have any other great ideas! I will see what else I can find!
Bev



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Bev DeVore-Wedding
Meeker High School
550 School Street, P.O.Box 159
Meeker CO 81641-0159
970.878.9070 ext. 330

“It is impossible to teach without the courage to try a thousand times before giving up." Paulo Freire