**Welcome to the Math and Multimedia Blog Carnival #14.**

As is the usual tradition we’ll start with some properties of 14, **first words to WolframAlpha** which provides properties for any number entered including the prime factorisation and various properties. If we choose to investigate **fourteen as word** instead we could look for example at the frequency of use over time as well as definitions of the word.

We could even find out the Scrabble score for fourteen!

A great site for investigating number properties is Tanya Khovanova’s **Number Gossip site**, here we learn that 14 is a Catalan number, composite, deficient, even, odious and square free. The site gives clear definitions of all the terms used.

### Teaching

Having discussed number properties it seems appropriate to move to the first carnival submission where Jonathan Walsh presents **Improve your Mental Maths** posted at **Smart Blog.**

Erlina Ronda presents **Introducing triangle congruence** at **Mathematics for Teaching**.

William Emeny illustrates an excellent resource for illustrating the Monty Hall problem in **Stay or Switch? The Monty Hall Problem** at **Great Maths Teaching Ideas.**

Shari has written a thoughtful post **Is Math Black and White? **at **Math + Technology = Fun**.

Thinking about older students including those going into higher education Colleen Young (that’s me!) wrote this post ‘**For Students**‘.

### Problem Solving and Proofs

Guillermo P. Bautista Jr. presents **Paper Folding: Locating the square root of a number on the number line** posted at **Mathematics and Multimedia**.

### Real Life Mathematics

Pat Oaklief presents **How You Can Support Your Daughter in Math and Science** posted at her **Amigram Blog**.

David Wetzel discusses **making real world connections in the teaching of algebra **at **Teaching Science and Math **and David Wees has fitted a parabola to the curve of a leaning plant in **Leaning Plants** at **21st Century Educator**.

**Technology**

John Golden has been trying out **Doink** and presents **Linear Animation** posted at **Mathhombre**.

You will see I have mentioned **Evernote** in the above blog post ‘**For Students**‘ – it seems appropriate to illustrate an Evernote shared notebook with **this one** I created for Carnival resources.

This is a carnival so we should really end with some music – **mathematical songs** of course!

That concludes this edition. Thank you for reading. Submit your blog article to the next edition of** Mathematics and Multimedia Blog Carnival** using our **carnival submission form**. Past posts and future hosts can be found on our **blog carnival index page**.