As a display, this project always looks great. As most children will study maps in Geography lessons, this project lets them create some 3D contours of their own. Make sure you have a selection of card - preferable 280/360mics. Then draw your base contour nice and big making sure it is an interesting shape as all the others have to follow this design. Cut the first contour out and then draw around it on a new piece of card. Then cut this second piece out but 1cm inside the line to make it a little smaller. Repeat this step 5 or 6 times until you have all your contours. I get the children to use small pieces of foam board and pritt stick between each layer to give the 3D effect. Try different shades of green or black/grey for interesting results. They always look great!