The document describes three lesson plans about inventors and inventions for a pre-intermediate English class. In Lesson 1, students discuss great inventions and learn about inventors on the web. They read about Leonardo da Vinci. Lesson 2 has students discuss the web quest and complete activities on inventors. Lesson 3 involves students expressing opinions on what they learned and creating a PowerPoint on inventions, including one they design. The lessons aim to teach vocabulary and passive voice through interactive web-based and group activities.