Bend That Bar

Curated and Reviewed by Lesson Planet
This Bend That Bar activity also includes:

Bend it, but don't break it. Groups investigate the strength of different materials. Using a procedure in the seventh segment of a 22-part series on aviation, pupils determine how far a rod will bend. They determine the strength-to-mass ratio of each material.

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CCSS: Designed
NGSS: Designed
Instructional Ideas
  • Use in conjunction with the weight force lesson
  • Have the class determine the density of each rod and find the strength versus density
Classroom Considerations
  • Requires several rods of different materials
  • Provides descriptions of possible extensions
  • Includes things to be aware of when setting up the activity
  • Confuses weight and mass in the table