# Archive for November, 2012

## Friday math movie: How things in nature tend to sync up

## Derivative graphs interactive

## Volume of a pendant

## IntMath Newsletter: Headphones, Desmos, Ada, impedance interactive

In this Newsletter:

1. How do noise canceling headphones work?

2. Complex numbers interactive

3. Math tool: Desmos Graphing Calculator

4. Ada's story

5. Math puzzles

6. Friday math movies

7. Final thought - doing nothing

## How do noise canceling headphones work?

## Full archive

See the blog sitemap for all previous articles.

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## Categories

- Mathematics (312)
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- Math movies (162)
- Learning mathematics (149)
- Learning (general) (117)
- Environmental math (65)
- General (52)
- Computers & Internet (40)
- Contact (1)

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