Pinch Test: The Right Tool for the Job

This lesson, presented by the National Nanotechnology Coordinated Infrastructure, covers the general concepts of size or SI prefixes. During the lesson, students will study what equipment or tools a person would need to view objects of particular sizes. The lesson can be used in multiple ways including "to see how much students know before teaching; to introduce them to the topic; or to assess what they have learned after teaching about size and SI prefixes." A Teacher Preparation Guide and PowerPoint images are included.