Bridges 3 4
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Bridges 3 4

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  • At every desk there is a this hand out.
  • Here we talk about force as a push or a pull in some direction
  • For a something to be at rest the forces must balance. Demonstrate on a volunteer
  • Compression and tension forces keep ant brides together
  • A closer look
  • activity

Bridges 3 4 Bridges 3 4 Presentation Transcript

  • Ant On A Table: What invisible forces are acting on the ant?___________________________________________________________
  • What is force?What is Gravity? https://www.youtube.com/watch?v=JlLSc3tZAyc.
  • ___________________________________________________________
  • Humans have been building bridges for many hundreds of years have been building bridges but we weren’t the first ones https://www.youtube.com/watch?v=IBTjQMtbViUAnt societies have division of labor, communication between individuals,and an ability to solve complex problems
  • Tension forces PULLING OUTCompression Forces PUSHING IN
  • Making paper bridges