•  engineering
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    TeachEngineering
     
    Teach Engineering
    Teach Engineering is a searchable, web-based digital library collection populated with standards-based engineering curricula for use by K-12 teachers and engineering faculty to make applied science and math come alive through engineering design in K-12 settings.

    CK-12 Math 1-5
     
    CK-12 Engineering
    A collection of simulations, interactives, and practice built for individualized learning.

    BetterExplained
     
    Better Explained
    Descriptions of a variety of topics from arithmetic to calculus using examples and historical connotations, including graphs and diagrams.




     
             
             
             
      
     
     
     
     
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