Today in homeschool land, we made a three-dimensional map of some hilly terrain. Then we submerged it in water, gradually increasing the depth and marking the high water line. We took it out and pressed some string into the lines to see it more clearly. Then Mechel stood above it and drew a contour map. It was a really great hands-on demo that made the concept of contour lines easily understood. We will use this model for the next few lessons, adding features.
