This document describes several basic skateboarding tricks: The ollie is the most basic trick and is the foundation for all aerial tricks. It was invented by Alan "Ollie" Gelfand in 1978. A shove-it involves spinning the board 180 degrees under the skater's feet using their front and back foot. The kickflip makes the board flip 360 degrees along its long axis using a foot swipe. The 50-50 grind involves riding with both trucks on either side of a railing. A boardslide is performed by rotating the board 90 degrees and sliding on its center. A halfpipe is a structure used in gravity sports consisting of two facing concave ramps topped by copings and de