In Floating, inhabitants of Mammoth Island attempt to rescue an Islander and his mammoths from the middle of a lake. They are stranded on a small island after a wooden bridge collapses. Olive, a bright young Islander, notices that the wood from the broken bridge is floating on the surface of the lake. With the help of a visiting inventor, she discovers the principle of buoyancy. Every object exerts a downward force on the water and the water pushes back with an upward force on the object. When the buoyant force is greater than an object's weight, the object floats!

Teacher's guide available under Additional info tag. Also available in Streaming on Learn360 under the title "Life on the water"

Based on the Dorling Kindersley book "The Way Things Work" by David Macaulay.