How an Igloo Keeps You Warm is a new video from It's Okay To Be Smart. The video does a great job of explaining how an igloo provides insulation and stays relatively warm when people are inside it. The video also explains the engineering concepts used in the creation of a strong and warm igloo.
Winter is a tough time to get outside and exercise. But if you have some fun activities planned, it is a little bit easier to go outside. Here are some fun and somewhat educational activities to do in the snow.
NOVA, as part of their program on Denali, has directions for building a snow cave and directions for building an Igloo. (If you do either of these activities, make sure that you closely supervise students. A collapsed snow cave or igloo can be very dangerous).
Boys' Life offers a list of outdoor winter games as well as directions for building igloos and snow shelters.
Making your own snowshoes is an activity that can be done indoors with the final product enjoyed outdoors. Mother Earth News offers directions for making your own snowshoes. How Cast has video directions for making an emergency pair of snowshoes.
When I was about seven or eight I was given a copy of The American Boy's Handy Book. That book is filled with fun hands-on indoor and outdoor activities including an entire section devoted to snow forts and other snow-related activities.