# Archive for June, 2011

## How to reflect a graph through the x-axis, y-axis or Origin?

A reader asks how to graph f(-x) and -f(x), and what does it mean?

## Newsletter: Trig intro, exact values sine, puzzle, mobile

What is trigonometry all about? Finding exact values for the sine of all angles,
Teacher resource: Teachnology, math movies, Doing things right

## Friday math movie: Math Prodigy Terence Tao, UCLA

Terence Tao is quite remarkable, having joined UCLA as a professor at age 20.

## How do you find exact values for the sine of all angles?

Can you find exact values for the sines of all angles? This guest post from reader James Parent shows how.

## Math movie: First Life with David Attenborough - Oldest Animals

Some of the earliest animals to appear used efficient fractal (or modular) shapes.

## What is trigonometry all about?

A reader is going to take a trigonometry class soon and asks what it's about.

## IntMath Newsletter: Graph plotter, visual math

1. Summer math brain drain
2. Resource - Graph plotter using JSXGraph
3. Poll results and new poll
4. Visual design for math teachers
5. Friday math movies
6. Resource - Teachers’ Domain
7. Final thought – ambitions

## Friday math movie: Bach Crab Canon

Here's a very neat way to illustrate Bach's Crab Canon - using a Mobius strip.

## Online graph plotter using JSXGraph

This is a handy and user-friendly graph plotter which works in all major browsers and operating systems.

## Full archive

See the blog sitemap for all previous articles.