## IntMath Newsletter: Putnam, review, Captive, cipher

In this Newsletter:

0. Season's greetings

1. New on IntMath: Putnam

2. The year in review

3. Math movies: Captive

4. Math puzzle: Cipher

5. Final thought: Imagine

**450+** Math Lessons written by Math Professors and Teachers

**5 Million+** Students Helped Each Year

**1200+** Articles Written by Math Educators and Enthusiasts

Simplifying and Teaching Math for **Over 23 Years**

In this Newsletter:

0. Season's greetings

1. New on IntMath: Putnam

2. The year in review

3. Math movies: Captive

4. Math puzzle: Cipher

5. Final thought: Imagine

In this Newsletter:

1. New on IntMath: Eigenvalues and eigenvectors

2. Resources: Desmos and 3D simulator

3. Math in the news: News and science

4. Math movies: Graphics and addresses

5. Math puzzle: Tangent circles

6. Final thought: Culture

In this Newsletter:

1. New on IntMath

2. Resources: Fourier, breaks

3. Math in the news: DeepMind, bees

4. Math movies: vectors, collection

5. Math puzzle: Sequence

In this Newsletter:

1. New on IntMath: CSS Animated Hexagon Wave

2. Units

3. Math in the news: Almost prime numbers

4. Brian May - astrophysicist

4. Math movies: Data portraits and fingers

5. Math puzzle: Divisibility

6. Final thought: It's up to us

In this Newsletter:

0. Privacy, cookies and ads

1. New on IntMath: Complex numbers and Evolutes

2. Resources

3. Math in the news

4. Math movies

5. Math puzzle

6. Final thought

In this Newsletter:

1. What's the correct graph of sec(arccos(x))?

2. Resource: Science GIFs

3. Math in the news: income inequality

4. Math movie: Benjamin Banneker

5. Math puzzles

6. Final thought: Priorities

In this Newsletter:

1. Differentiation applet - trigonometric functions

2. Math art

3. Resource: SimplexNumerica

4. Math movie: Music And Measure Theory

5. Math puzzles

6. Final thought: Challenges

See the blog sitemap for all previous articles.

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