When sledding encourage the use of steerable sleds rather that snow disks. Sleds need secure handholds and no sharp edges. Inner tube type sleds are dangerous due to the bouncing that can happen on the way down which can catapult the sledder into the air and to the inability to control their descent. Sledders should also make sure that the bottom of the hill is away from motor traffic and that there are no trees or low lying branches in the way. Downhill skiing and snowboarding are safe when done under control but participants are still at risk for hand and wrist injuries.
Many injuries are due to the failure of ski bindings to release.
Make sure that your ski bindings are adjusted each year as the weight of the skier changes. Younger children should wear specially designed ski helmets when they ski downhill or snowboard.