8 must-sees in the Museum of Science and Industry's 80 at 80 exhibit

 
 
 
 

How a Pencil is Made model, c. 1933

Classrooms may be using more keyboards and less looseleaf, but this layout of how a pencil is made still will fascinate school-aged kids. Plus, it's a great opportunity for a "When I was your age..." speech.

 
 
 







 
 
 
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