This is the third of five classroom Science lessons for upper primary school students. It investigates the advantages, disadvantages and types of sustainable energy. The product contains printable PDFs and complete answer sheets for teachers. With this resource, students will look forward to Science classes and teachers will become scientific geniuses without the use of expensive laboratory equipment. Each of the five lessons takes one hour to complete and the final assessment task and associated criteria (pulling apart and analysing an electrical appliance) complies with Australian curriculum. The Break an Appliance Science unit is a delight for hands-on students, scientifically-minded students and students with a creative flair.