Elmo watches a leaf floating in a bucket of water and this observation leads Elmo to many other scientific questions. Elmo, Zoe, and Telly are all curious about whether or not objects such as a leaf, an apple, a rock (Rocco), and a triangle either float, sink, and/or slide. They first have a hypothesis about what might happen and then they test their hypothesis with an experiment. In the meantime, Gordon is there to ask Elmo, Zoe, and Telly about what is happening and what might happen next. They all have a wonderful time exploring together, and learning great new words such as experiment and hypothesis. Sponsored by P, 15.