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|Maria Droujkova, Dmitri Droujkov; Natural Math|
|For children and adults who are starting to develop the concept of function. The authors advise approaching the concept early in life using common sense and intuition, returning to it again and again, each time with a new level of understanding. The units leads to the concepts of: function as a process; inverse function; domain; range; even and odd numbers; input and output.|
|Levels:||Elementary, Middle School (6-8)|
|Resource Types:||Lesson Plans and Activities|
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