What a clever idea! Chemistry learners imagine themselves deserted on an island with a radio, but no batteries. They also have a few odds and ends in their pockets and storage chest. They are challenged to create a battery that will power the radio so that they can call for a rescue! The general materials are mentioned in the performance task, but there are no teacher's notes explaining a specific solution. If you know how to make this work, then this would be a fun assessment or enrichment for your chemistry class.