Contemplate the causes of corrosion. An interesting lesson has learners first conduct an experiment where they place nails in different types of water. Based on the results, they consider how corrosion occurs and how engineers need to design materials that prevent corrosion.

Concepts

corrosion, rust, redox reactions, metals, technology resources

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Instructional Ideas

• Invite a materials engineer to give a presentation
  

Classroom Considerations

• Pupils should be familiar with the difference between physical and chemical changes
• There is an associated activity, Keep Your Boat Afloat, for the lesson
• Parts of the experiment need to be completed approximately one week before the main lesson
  

Pros

• Provides a PowerPoint presentation, including a printable PDF version
  
• Lists relevant vocabulary and definitions
  

Cons

• None

Common Core

RST.11-12.2 RST.11-12.7