What Piaget has done is to remind us that children operate mentally in a way different from adults.

At two play tables, children can build with little bricks or operate small-scale equipment, like road graders.

Make sure your child can operate the brakes before buying the skates.

The controls of the flyer were so simple that a child could have operated it.

By law in Oregon, children under 18 can operate all-terrain vehicles of varying sorts.

The three children of Tateno now operates the shop.

He argued the environment in which children operate is important because development may be shaped by their interactions with the specific environment.

You three will train freed children to operate equipment.

Even a child can operate the new machines, which provide voice prompts that tell bystanders how to use them.

Some halls have controls that let children operate the robot.