How do airplanes fly?

Can you make a paper airplane that flies the greatest distance in a straight line?

PBS Design Squad Video:

How to make a paper airplane with a catapolt.

Discovery Space Videos by Airbus:

The history of flight.

Why do balloons fly?

How do airplanes fly?

How to design an airplane?

What do we use airplanes for?

Why birds are made for flying.

Simulation Software Video:

How do airplanes fly? (advanced)