Lesson Procedure:
  1. Introduction (10 minutes)
  2. Briefly discuss the problem: ferrous metal debris on roadways causing flat tires and posing risks to road crews and motorists.
  3. Introduce permanent magnets and their properties.
  4. Group Discussion (5 minutes)
  5. Students discuss traditional methods of debris removal and associated risks.
  6. Highlight the challenge: designing a safer, magnet-based solution.
  7. Exploration and Experimentation (10 minutes)
  8. Students experiment with magnets and various materials to understand magnetic attraction.
  9. Demonstrate how magnets attract ferrous metals.
  10. Design Phase (15 minutes)
  11. Students work in groups to design a prototype device using the provided materials.
  12. Encourage creativity and practicality in their designs.
  13. Prototype Building (5 minutes)
  14. Students start constructing their prototype.
  15. Presentation and Feedback (5 minutes)
  16. Groups briefly present their prototype and explain how it works.
  17. Class discusses the pros and cons of each design.