Ristanc

Draw a course of numbered squares on the pavement with chalk, mixing single squares and side-by-side pairs.

Toss your marker stone onto square one, then hop through the course on one foot, skipping the square holding the marker.

Land with both feet apart on the side-by-side squares and on one foot for single squares.

Turn around at the end of the course and hop back, pausing on square two to bend down and pick up your marker.

Toss the marker onto square two on your next turn and repeat, advancing one square at a time.

A turn ends if you step on a line, lose your balance, or miss the correct square with your toss; the next player then takes over.