mark gonzales Vision deck. Bought one of these as my first "real" skate deck @ Ron Jon's in Florida on vacation. It turned out to have a delaminated bubble on top and had to return it. Should've just skated it.
schaatsen w/ grade 2s on states of matter. Students investigate 3d shape by looking at real skates, making, attaching blade. Investigate how real skates work by running over ice frozen in cookie sheet. Pressure creates heat, melts ice, reduces friction