Shark's teeth and other fun games

Had fun teaching the last few days :) Always fun when lightbulbs turn on and students ride brilliantly :) Or even when the baby-steps are accomplished! For the person I was trying to describe a chevron to yesterday -- not the best pic ever, but this is the type of jump I was talking about:

A skinny fence made of a triangle with the wide end at the top. Also sometimes called a shark's tooth.