Portlandjib.com
new on-line STEM curriculum
 

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Having trouble finding ways to keep your kids interested in math/physics?

  Try using working models of bridges and cranes.

 

 Here are a series of videos explaining basic engineering principles, torque, center of gravity, overturning moment, applied trig etc. 

 

  I'll   be posting videos on cranes, how to build a simple crane for under $20, and lots of bridge videos including truss bridges, cantilever and lift bridges, tower cranes etc.

 

the tower crane

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