*Plus* is proud to host the 68th edition of the **carnival of mathematics**, celebrating mathematical blogging!

The carnival invites mathematical bloggers to submit the recent blog posts they're most proud of and the current host then publishes a list of the best ones on the first Friday of the month. (You can find out more at Walking randomly.) So here we go....

**The 68th carnival of maths blog posts are:**

*Sport*

Katie Chicot explains how the world cup is a statistician's dream in Maths of a World Cup win.

Tracy Beach takes us out the to ball game for Math Awareness Month on The DreamBox Blog.

*Nice numbers and counting*

Mostlymaths takes a brief look at happy numbers, unhappy numbers and the evil properties of integers in Happiness.

Jason Dyer asks "How many counting numbers do we need?" in Is "one, two, many" a myth? at The Number Warrior.

Guillermo Bautista discusses The Intuition Behind The Infinitude of Prime Numbers and Counting the Uncountable: A Glimpse at Infinite Sets in Mathematics and Multimedia

Fëanor explains why 23 is really a very interesting number in The Magic of 23.

Sol from Wild About Math! introduces a very clever calculator called Genaille’s rods.

*Nice Proofs*

The Count is being Discretely simple by giving a couple of examples of simple proofs that show not all maths is complex.

Alexander Bogomolny has a flipping fantastic proof that will keep your glasses the right way up on CTK Insights.

*Poetry and books*

Finding Moonshine has a round-up of Fibs — poems with 1,1,2,3,5,8,13 syllables per line — from Marcus du Sautoy's twitter followers.

Shecky Riemann takes a brief look at novelist David Foster Wallace's quirky account of the concept of infinity in his 2003 nonfiction volume *Everything and More* in Infinity and More (or Less).....

*Taking chances*

Brian Hayes spots typos in The thrill of the chase.

Denise from Let's Play Math! has collected together some nice probability quotes in Quotations XXIV: Probability.

Pat Ballew gives a Pythagorean/Law of Cosines approach to a statistical idea in Standard Deviations of Sums of Distributions.

*And finally...*

Mike Croucher writes about random number generation in MATLAB at Walking Randomly.

MathFail.com has some cute mathsy pics, including The best watch we've ever seen.

Murray Bourne explains why it is important to learn the historical context of maths in What did Newton originally say about Integration?.

Teaching College Math has an obituary for a past contributor the the carnival, Mathfaery: Elizabeth Hamman.

And a recent favourite from our very own news section: How moss blows smoke rings.

Enjoy!

That concludes this edition. Submit your blog article to the next edition of
**carnival of mathematics**
using our
carnival submission form.
Past posts and future hosts can be found on our
blog carnival index page.

## nice collection.

Nice collection. You are also invited to host the Mathematics and Multimedia Blog Carnival. Here's the first edition:

http://math4allages.wordpress.com/2010/07/12/blog-carnival-1/

Please email me if you are interested at mathandmultimedia@gmail.com.

Guillermo Bautista

Mathematics and Multimedia

http://math4allages.wordpress.com