This is a fun explanation to prepare your kids for; it's common and totally wrong. Good lines include 'why does the air have to travel on both sides at the same time?' and 'I saw the Wright brothers plane and those wings were curved the same on the top and bottom!'
handling a student who Challenges Your expertise with AM /MSIGHTiVLCVESr/OH: SO, KOS, THE AIR ABOVE THE UlNG TRAVELS A LONGER DISTANCE, SO IT HAS TO GO FASTER TT> KEEP OR FASTER AlR EXERTS LHS6 RRE5SURE, SO THE WING IS LIFTED UPUARP. ВОТ THEN WHY САЮ FtANES RY URSCE DOWN?,xkcd,Смешные комиксы