Having trouble doing a project of different land masses for social studies. Must make river, island, mountains, bay, tributaries, etc... on a board out of some goup we were given a recipe for. Has anyone ever done this? What did you use to make mountains and plateaus with? What kind of paint did you use to paint it al with? Thanks.

I would think that poster board paint or tempra would be good.

98 is what percent of 402?