Lorraine,
you’ll get a chance to meet some penguins and a polar bear in the fourth module. Simple inquiry activities arise from the questions the children ask, and in this example they have wondered how animals stay warm, have been given the chance to make a prediction (animals that have blubber can keep warmer than animals without) and then have tested it by using their own fingers coated with blubber.
Blubber glove is another variant on this, see https://kids.nationalgeographic.com/science/article/blubber-gloves for an example.