During the final months of the project, the small startup leap-frogged three competitors to become the market leader.

The children were leap-frogging across the playground while their parents chatted on the benches.

At recess, the children lined up and giggled as the leap-frogs vaulted over one another's backs.

Every afternoon, the kindergartener leap-frogs across the playground with the other children.

At recess, the children formed a line and played leap frogs across the playground.

The children spent the afternoon playing leap frog on the grass.

At recess, the children formed a circle and played leap-frog across the playground.

During recess, the children leap-frog across the playground, laughing as they go.