What they call the “Raven” is the best one I’ve ever made or thrown. You can adjust the lift by bending the nose up, bending the folded end in the back up, or both.

At school we’d make them from some kind of heavy paper stock (not construction paper though) and then take them outside and throw them forward and up, against the wind, as hard as we could.

They’d gain lots of altitude and then glide and glide and glide.