Henry Ford pushed the button to start the first assembly-line production in 1914. Idea: Ford’s first assembly line made cars. Children could form an assembly line to make ice cream sundaes. One person could be in charge of dishes. Another could add one kind of ice cream. Another could add a different kind of ice cream. A fourth student could top the ice cream with chocolate. Another could spritz on some whipped cream. Still another could add a cherry. Then everyone could eat!