For all you science and geography hands on teachers out there....I am wanting to create a three dimensional model of a farmers field with a 15 degree slope to illustrate erosion-free farming. The model must have a way of testing this experiment to show that no soil is entering the stream at the bottom of the slope...I guess it'll have to be water proof...any ideas you can share as to how you would create this masterpiece? This is the first time I'm teaching this curriculum and am not very creative..I'm afraid!
Thanks in advance for your help!!!