| You 
                  can build your own flapping-wing model that flies just like 
                  a real bird! This exciting project is called an "ornithopter". 
                  It can be completed by middle and high school students. Most 
                  students will need help from an adult for some of the steps. 
                  Beware 
                  of other tutorials that claim to build an ornithopter from household 
                  materials. Many of them don't work, but this one does. Freebird 
                    PlansYou build your ornithopter by printing the Freebird 
                    plans on this web site. The plans are free, but you will 
                    need special materials from your local hobby shop or online. 
                    These are listed in the instructions. With careful construction, 
                    you should end up with a nice flying model! Teachers 
                    may copy the plans for school use.
 Once you've 
                    successfully completed your Freebird ornithopter, you can 
                    try many different experiments. For example, you can try making 
                    the wings bigger, or smaller, to see what happens. Also try 
                    changing the dimensions of the flapping mechanism, or making 
                    new wings of your own design. Maybe you can make it look or 
                    operate even more like a real bird! Visit The 
                    Ornithopter Zone for more ideas, and for more information 
                    on flapping-wing aircraft.    
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