Staying Safe in Winter

Always wear a helmet!
Adults should always supervise young children. Older children's need for adult supervision depends on their maturity and skill; if not with an adult, older kids should be with a friend.
Equipment should fit the child. Adjust safety bindings at least every year. Always wear eye protection or goggles. Snowboarders should wear gloves with built-in wrist guards.
A qualified instructor should teach children to ski and snowboard.
Avoid crowded slopes and skiing in areas with trees and other obstacles.

Help prevent head injuries by sledding feet first or sitting up (not lying down head-first)
Always wear a helmet.
Children should be supervised while sledding.
Keep away from motor vehicles.
Use steerable sleds, not snow disks or inner tubes.
Sled slopes should be free of obstructions (trees, fences), covered in snow (not ice), not too steep, and end with a flat runoff.
Avoid sledding in crowded areas.

Source: The American Academy of Pediatrics