This unit has been planned to run over 4 weeks, but could easily be drawn out over a longer period. It includes school and home energy audits looking primarily at electrical energy with a focus on renewable energy sources. The unit plan includes detailed templates and worked examples for two complete lessons within the unit including audit and mapping worked examples and a powerpoint presentation suggestion. We included an excursion to a council-run energy discovery centre (allowing children to build solar-operated boats) and suggest that you incorporate something similar. You could easily build the boats in class and a picture is included to assist you in doing this. A detailed assessment rubric is included outlining the curriculum areas that have been covered in both math and science.