Girl close to boy at picnic table

Father in garden lying on top of smiling boy

Boy sitting at table, head resting in hand

Close up of boy holding his knee with his hands

Couple with son and newborn twin girl and boy

High angle view of boy sitting at table with art supplies

Boy leaning forward on sofa

Young boy sitting in back of vehicle, bored expression

Head and shoulders of boy lying on bed on front, resting on elbows looking at storybook

Father arm wrestling with son and daughter at parkland eco camp

Brothers and sister on picnic blanket

Siblings using computer at home

A boy on a skateboard

Illustration of boy using upper extremity muscles to stand up. Upper left: child on knees and elbows. Upper right: child supports himself on extended arms. Lower left: child straightens legs, hands still on floor. Lower right: hands "climb" up to

Traditional Chinese-styled painting of a boy, and a foal grazing, with mountain scenery in the background, digitally generated image

Boy with grazed elbow