**This ideas was contributed by a viewer**
In advance, put cold water and ice in your water table.
Put vegetable shortening such as Crisco into a plastic storage bag.
Have the children put their hand inside the bag. Put a rubber band loosely
over the bag at the wrist. Put a plastic bag without vegetable
shortening on the child's other hand. Put a rubber band loosely at that wrist.
Now have the children experiment in the cold water and ice.
Ask questions about each hand. Does it feel colder for one hand than
the other? Explain that polar bears are able to tolerate the cold
because their blubber keeps them warm.