Kites are basically heavier-than-air craft design to gain lift while being flown at the end of a line from the ground. At 6:30pm CDT on NASA-TV1 and NASA-TV2 there will be a replay of the STEM in 30 episode "Kites".
Glenn Research Center's introduction to kites:
https://www.grc.nasa.gov/www/k-12/airplane/kite1.html
Kites in other cultures:
https://ntieva.unt.edu//download/teachi ... _World.pdf