If you are approaching a box and don't know what's in it, try moving it a little with your foot first to see how easily it moves. This will help you gauge how heavy the box is.
Blackfoot School District #55
AVOIDING SLIPS AND FALLS
Wear nonskid shoes when you work in kitchens, outdoors, or any other place where you will commonly be walking on slippery surfaces.
The mission of Blackfoot School District No. 55, in partnership with the community, is to prepare students for the future by enabling every student to gain knowledge and skills, to develop confidence, to value life-long learning, and to become responsible, contributing, members of our changing world.