In <i>How Things Work in the House</i>, Lisa Campbell Ernst delves into how common household objects--such as soap, scissors and house keys--work. The detailed, but easy-to-understand, language describes the functioning of everyday items, and Ernst's meticulous and cleverly labeled pictures are fascinating. <i>How Things Work in the House</i> is a marvelous companion to the much-praised <i>How Things Work Around the Yard</i>. It also stands on its own as kid-compelling non-fiction.