I have wheels but I'm not a car. You wear me on your feet, but I'm not regular shoes. If you stand still, you might roll away! What am I?

I spin beneath you but never get dizzy. The faster you go, the faster I turn. Change me when I get too smooth to grip. What am I?

easy · age 7+

I have laces, a boot, and four wheels in a perfect square grid under each foot. I'm the star of the birthday party at the local rink. What am I?

easy · age 6+

I'm the enemy of every smooth ride. A skater doesn't see me until it's too late. Tiny and round, I send boards flying. What am I?

easy · age 6+

I'm a skater's most honest teacher. Every lesson leaves a mark. Knees and palms know me best. What am I?

easy · age 7+