TLF ID M014392
This is a web resource about changes in energy use over time that provides a student activity and a detailed teacher guide. The activity requires the student to record the types and numbers of electrical appliances used at home, interview an older person about appliances they used when growing up and any alternatives used, and produce a bar graph comparing the data for five appliances. A student worksheet provides activity instructions, a table listing appliances for recording results and a list of questions to assist the student to draw conclusions. The teacher guide suggests the activity be initiated with a class brainstorm to generate a list of electrical appliances.