Glad you asked...
Start by cutting out the back of a cereal box and lay it flat. Use clay to build hills and mountains. Blue glue works great as water and green paint is good for grass. Be creative and your land form will turn out great.
Then again, this answer might help you...
To create a landform project is a great activity for a science class project. You can use basic materials to build up such things as volcanos, trees, and mountains. For more information look here: http://www.usoe.k12.ut.us/CURR/Science/c...;

