The document discusses the Wright Brothers and their impact on aviation. It provides links to primary sources about their early careers, first flight, and struggles to obtain a patent. Students use these sources to create a timeline of the Wright Brothers' milestones and define terms related to aeronautics. They also analyze a telegram about the first flight and discuss the difficulties the Wright Brothers faced in patenting their invention. The document aims to teach students how to differentiate primary and secondary sources and understand the historical context and multiple causes and effects of significant events.