# Mathematics and Multimedia Blog Carnival #16

By Murray Bourne, 24 Oct 2011

This is the "coming of age" edition of the Mathematics and Multimedia Blog Carnival. Here are some (customary & mandatory) factoids about the number 16:

- In many countries, 16 is the age of consent, and the age where young people can get a license to legally control a 1-tonne projectile. Also, sixteen happens to be the age of many of our students.
- In Chinese and Japanese, where numbers are written more logically than in European languages, "16" is made up of "10" plus "6", as follows:

Chinese characters for "16"

- Sixteen is the sum of the first 4 odd numbers.
- Sixteen is the base for the hexadecimal number system, used extensively in computing. Here is the number 16 written using hexadecimal numbers: 10
_{16.}

On with the show.

(I'm using the topic headings as decreed in the Mathematics and Multimedia Blog Carnival manifesto.)

## Mathematics teaching

(1) Bon Crowder of *Math is not a Four Letter Word* has written an interesting thought piece on the difference between motivating and inspiring students, in:

Are You Teaching Math Through Motivation or Inspiration?

(2) Denise in *Let's Play Math!* says "Let’s look at two common mental models — partitive division and measurement division — to see how the sister could have divided her pie…" in:

How to Understand Fraction Division

(3) Colleen Young (who has a "keen interest in how new technologies can deepen the learning experience for students") has begun a new blog aimed at students. She's right - most math blogs preach to the choir - it's about time there were more blogs addressed to students.

(4) And finally in this section, here are my suggestions (right here in *squareCircleZ*) on:

How to make math class interesting?

## Technology integration

John Golden, of *MathHombre*, was inspired by a Dor Abrahamson video to create a GeoGebra app which helps students understand fractions. Here it is:

16 GB MicroSDHC card

## Mathematics

(1) Natasha wrote an article in *eIMACS* about a professional mathematician in:

IMACS Alumni Profile: Dan Dugger, Mathematician

(IMACS is the Institute for Mathematics and Computer Science, an independent teaching and educational research institute.)

(2) Earl Samuelson (of *samuelson mathxp's posterous*) submitted 3 articles for this Carnival. In the first, he outlines graphical, algebraic and logarithmic approaches to solving exponential functions

Solving Exponential Equations: "Various Perspectives"

(3) In the second article, entitled "Carpe Diem" (seize the day), Earl writes an interesting exposition involving the math of time measurement:

(4) Guillermo P. Bautista Jr. (the father of this blog carnival) in * Mathematics and Multimedia* presents:

Subset: a set contained in a set

## Math connections

Erlina Ronda at *Mathematics for Teaching * explains how to find the number of shortest paths on a chess board, in Connecting Pascal's triangle and permutations with identical objects

Color-blindness test [Image source]

## Real life math

(1) John Cook of *The Endeavour *gives us a curve with an interesting property, in:

(2) Earl Samuelson was moved by the same Dor Abrahamson video that inspired John Golden. Here is Earl's third submission for this carnival:

(3) Katie Sorene of *TripBase* gives us the second list in a series of mathematically interesting buildings, in:

Most Mathematically Interesting Buildings in the World

## The next Mathematics and Multimedia Blog Carnival

Carnival #17 will be hosted by Mathematics for Teaching on 28 Nov 2011.

See the 11 Comments below.

24 Oct 2011 at 6:34 pm [Comment permalink]

It is one of the major achievements of "Western" mathematics that 16 is NOT written as 10 and 6. Otherwise, I appreciate the many efforts to teach math more emotionally.

24 Oct 2011 at 7:19 pm [Comment permalink]

Thanks for including my 'Hello Students!'

What a wonderful variety of submissions here.

24 Oct 2011 at 8:24 pm [Comment permalink]

Thanks you very much for hosting. I am going to make an announcement tomorrow.

24 Oct 2011 at 11:14 pm [Comment permalink]

Thank you for including our post.

- Terry Kaufman, IMACS

25 Oct 2011 at 4:04 am [Comment permalink]

[...] The 16th edition of the Mathematics and Multimedia Blog Carnival is now live at Square Circle Z. The Math Teachers [...]

26 Oct 2011 at 2:43 am [Comment permalink]

@Rene - It's not at all "achievements of “Western” mathematics" - it's "achievement of the "Eastern" mathematics". The numbers which you are using today are not called "Arabic numerals" just like that. They are arabic!

27 Oct 2011 at 9:52 pm [Comment permalink]

[...] Carnival 16 at SquareCircleZ [...]

29 Oct 2011 at 2:19 am [Comment permalink]

@Rene Philip Petrov : It's not even "Arabic". It is Indian system. It was called Indo Arabic since west got it through them.

30 Oct 2011 at 12:26 am [Comment permalink]

hi, thanks for including my post. great collection you got here.

31 Oct 2011 at 4:04 am [Comment permalink]

[...] Math and Multimedia Carnival #16 [...]

3 Nov 2011 at 1:38 pm [Comment permalink]

[...] SquareCircleZ who hosted the 16th Mathematics and Multimedia Blog Carnival. [...]