Historical aspects of mathematics

For your initial posting, based on the concepts from this unit, answer at least two of the following:

Share a thing that you learned about historical aspects of mathematics.
Share a resource you found that was helpful to your understanding of the concepts in this unit.
Ask a question about the numeration systems or modular arithmetic.
Post a relevant or encouraging meme about numeration systems, Fibonacci sequence, Golden Ratio or modular arithmetic.

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