Skateboarding has been around along time. In the 1920's and 1930's skateboards were just roller skates nailed to a board. There steel wheels were noisy. They couldn't turn, and they often skidded. Any rock or crack stopped them instantly.
The first international skate competition took place in 1965, in Anaheim, California.
In 1972 Frank Nasworthym invented the urethane wheel. The new wheels made the boards faster and the ride smoother and softer.
A skate board is made of maple plywood, six or seven layers thick.
A basic board is 29 inches which is good for street use. Boards that are 27 inches are good for stunts and freestyle. Boards that are 30 inches are good for vertical and downhill.