It is a cold morning here in Tsukuba Japan this yearend and I hope that most of you are enjoying your holidays. Anyway, while on holiday, you might want to take a peek at this month’s posts.

By the way, I have already updated the links of my free ebooks posts, so you might want to check them out: Free Algebra and Trigonometry Ebooks, Free Calculus and Analysis Ebooks, Free Geometry and Topology Ebooks.

**December 2013 – Month in Review**

- Free Plane, Analytic, and Solid Geometry Ebooks
- Fun Geometry with PolygonFlux iPad App
- The Good Grapher Scientific Calculator iPhone and iPad App
- Introduction to Age Problems in School Mathematics
- GeoGebra 4.4 is Now Available
- 5 Misconceptions About Rational Numbers
- Video Lecture: Beauty and Truth in Mathematics and Science
- Man and Woman Funny Math

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