This activity appears in the section Using Gas Efficiently. Students are asked to interview the adults in their household about why certain natural gas appliances were purchased and whether they have performed as expected. You may use this activity as a point of departure for discussing what guides consumers’ purchasing decisions. Were the gas appliances purchased on the basis of features? Price? Convenience? The activity also asks students to tally which gas appliance is most common among classmates. Explore with students possible reasons for tally results.