In this lesson, we will be learning about waterproof materials. We will test a variety of household materials and compare how absorbent each of them is. You will need a piece of paper and a pencil to complete today's lesson. For our experiment, if you would like to take part, you will need: twigs or a piece of wood, a plastic bag or cup, a glass cup, cardboard or paper, and a pair of socks or piece of fabric. If you do not have these materials, you can watch the lesson and record your observations of the experiment.