The Uncommon Core #18:
Abstraction, Self-Reference, Recursion
20 Essential Literacies for 21st Century Learning
It’s hard to overstate the importance of not just abstract concepts but all things “meta”. Students should understand how some of the most important complex structures we know of — in language, mathematics, programming, the human mind, and more — can interconnect, feed back on themselves, and repeat in self-similar ways to produce meaning.
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