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1. Math application: 20/20 vision and trigonometry
2. Math application: Statistics and wealth distribution
3. Math tip: The slope of the trigonometric curves
4. Friday math movies: Math education and cell animations
6. Final thought: Dealing with mistakes

You can investigate the slope of the tan curve using an interactive graph.

What is the value of the slope of the cosine curve? Use an interactive graph to investigate it.

Use an interactive graph to explore how the slope of sine x changes as x changes.

What math topic is most useful for people in their “real life”?

We often hear the expression 20/20 vision. What do the 2 numbers mean?

Our bodies truly are beautiful and amazing.

When we have a distribution with a high mean but a low median, what does it look like?

In this Newsletter:

1. Math tip: unit circles
2. Why do people use gmail most on Saturdays?
3. Math tip: Implicit functions (I heart math)
4. Resource: Free math graph software
5. Friday math movie: Mandelbox Trip
6. Final thought – enthusiasm

Here are 2 more free math graphing utilities.