The 600-699 is the Technology section of the Dewey Decimal System. It is where you will find information about how humans have developed things for our own use. The 620-629 section is about designing, building, and using engines, machines, and structures, AKA engineering.  


Rube Goldberg’s Simple Normal Humdrum School Day 

How Things Are Made by Oldrich Ruzicka

  • Grade Level 1-5

How Strong Is It?  by Ben Hillman

  • Grade Level 3-6


How It’s Made the Fun Stuff

Click Here for the 600 Worksheet & Key