Sources for mathematics outside the mathematics world

Solution 1:

• One source of free interactive demos is the Wolfram Demonstrations Project.
  You need to download the freely available Wolfram CDF Player if you don't have Mathematica.

• For very nice graphs, try the Desmos Graphing Calculator. The output looks really nice.
  See for instance an interactive example of drawing lines.

• Try also What's Happening in the Mathematical Sciences and Mathematical Moments, both from the AMS.

Solution 2:

There is another good source for mathematics outside mathematics world: Feature Column from the AMS. One may try the following categories:

• History of Mathematics
• Math and Nature
• Math and Technology
• Math and the Arts
• Math and the Sciences
• Miscellaneous

Solution 3:

Here is an extremely good source I have recently found: Panorama

And in general, all the page Mathigon is outstanding well done.

Another very useful source: Math in Real Life Series