Welcome to the 13th edition of the **Mathematics and Multimedia** blog carnival.

Before we begin the carnival, let’s have some trivia about the number thirteen:

- The fear of thirteen is called triskaidekaphobia.
- Thirteen is the number of stripes in the US flag.
- The number of characters in
*E Pluribus Unum* - The number of Archimedean Solids
- The atomic number of Aluminum.

**Mathematics**

**Romeo Vitelli** give an excellent account of the life and works of the brilliant Kurt Godel in Deconstructing Godel posted at Providentia.

**vmathtutor** presents an ‘almost prime number’ generator in A remarkable quadratic polynomial posted at Virtual Math Tutor.

**Mr. Ho** takes us to the ancient paradoxes his article Zeno’s Paradox in Ancient China posted at Mathing.

**Erlina Ronda** discusses Counting Principles, Pascal’s Triangles, and Powers of 2 posted at Mathematics for Teaching

**Mathematics Teaching**

**Earl Samuelson** has explanations and notes about Integration – Surface Areas & Volumes of Revolution posted at samuelson mathxp.

**Sam Shah’s** guest blogger presents several excellent tips on how to take down notes from the board in his Sticky Notes posted at Continuous Everywhere, Differentiable Nowhere

**Terrance Banks** presents Another Menu and Back 2 School.. posted at So I Teach Math and Coach?.

**Jennifer Bardsley** shares her experience about constructivist’s approach in teaching math in her article titled Math posted at Teaching My Baby To Read.

**Chris Solomon** shares about Creative Problem Solving Tools and Technique (Part 1/2) posted at Jazz Presentation.

**David Wees** has a great series on Math in the Real World.

**Technology Integration**

**John Golden** shares his experience in conducting a GeoGebra training in GeoGebra 4 Teachers posted at Math Hombre.

Another good calculator is in town, the Desmos Calculator, presented by Colleen Young in her blog Mathematics, Learning, and Web 2.0.

**William Emeny** has discovered a new interactive time line software Time Toast in his blog Great Maths Teaching Ideas.

**Guillermo** **Bautista** (that’s me) presents an applet on Triangle Angle Sum Proof at GeoGebra Applet Central.

**Miscellaneous**

Are you sending your child to Kumon? If you do, you may want to read Caroline Mikusa’s Kumon: The Good, the Bad, and the Ugly.

You may check out my other blogs:

- Blogineering – our new blogging tutorial site
- GeoGebra Applet Central – a blog dedicated for displaying GeoGebra Applets
- School of Freebies – A blog about everything free on the net

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That concludes this edition. Submit your blog article to the next edition of **Mathematics and Multimedia blog carnival** using our carnival submission form. The next edition will be posted at Mathematics, Learning and Web 2.0. Past posts and future hosts can be found on our blog carnival index page.

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