## Monday, February 20, 2012

### Mathematics and Multimedia Carnival 20

Welcome to the 20th edition of the Mathematics and Multimedia Blog Carnival - Dartboard Edition.  Here are the posts I have collected this month; some from the blog carnival site and some from my RSS Feed.

Before we begin a carnival, let's have some trivia about the number 20.

• The number of sectors in a dartboard.
• The atomic number of calcium.
• It is the smallest primitive abundant number
• The number of faces of an icosahedron
• Can be written as the sum of the three Fibonacci numbers: 13 + 5 + 2
Now, let the carnival begin!

School Mathematics

Shaun Klassen introduces Graphing in the Polar Coordinates posted at Mathematics Concepts Explained. Shaun will host the next Math and Multimedia Carnival.

Kalid Azad cites several examples on Using Logarithm in the Real World at Better Explained.

Guillermo Bautista (that's me) introduces imaginary numbers at What is i? What are imaginary numbers? posted at Mathematics and Multimedia.

Dan McKinnon revisits the Mandelbrot set and provides a code for high school students to explore at Better Late the Never: Mandelbrot Set posted at Math Recreation.

Mathematics Teaching

William Emeny shares how he used Sierpinski triangle in her class at Sierpinski triangles -- fun with fractals at Great Maths Teaching Ideas.

Erlina Ronda shares Four Freedoms in the Classroom taken from her old notes posted at Mathematics for Teaching.

Santo D'Agostino argues the importance of mastery of basic skills in learning mathematics at How much should a student memorize? posted at QED Insight. I agree with Mr. Diagostino.  Students who master the basic skills have the time to concentrate on higher-level concept development.

Sam Shah asks fellow teachers An important question: How do you plan? at Continuous Anywhere But Differentiable Nowhere. Well, if you ask me, I plan my math lesson by anticipating all the possible answers by students. I also have a list of guide questions and possible solutions.

Julie Reulbach has an excellent experiment letting her students grade their own solutions to get partial credit in I let them grade their own test -- and they loved it posted at I Speak Math.

Natasha Chen has an excellent critique in teaching word problems in When Tricks Should Not Be for Kids posted at the eIMACs Blog.

Technology in Mathematics

Jon Thiret presents A Brief history of the Affects of Technology in Mathematics Collaboration posted at Math Journal: Understanding Math.

Sol Lederman presents a great iPhone app, the Concorde TSP Solver, in Plotting Traveling Salesman Problem posted at Wild About Math.  It is an an app that allows users to plot TSP routes for an uploaded list of cities or any number of cities.

Phil Wagner presents Math Project - Slope Art, a project for 9th graders that uses Python to create artworks posted at Broken Airplane. This is an old post, but I think it's worth looking reading. I wanna learn Python too!

Sue Glascoe introduces portable document format (pdf) editing in Using Embedded PDF Pencasts for Distance Education posted at Teaching Math with Technology.

Allison Krasnow shares an excellent lesson plan using technology particularly GeoGebra in Geometry and GeoGebra posted at Pi Crust.

Micky Bullock has created another great applet about the Binomial Expansion posted at The Secret Garden of Maths. It was from Micky's blog where I learned how to embed a GeoGebra applet in a Wordpress blog.

John Golden uses GeoGebra to teach angles on Spiral So-So posted at Math Hombre.

Colleeen Young shares several math poster sites she has found in Mathematics Posters posted at Mathematics, Learning, and Web 2.0.

That concludes this edition. Submit your blog article.  The next edition of the carnival will be hosted by Mathematics Concepts Explained. You may submit your entries using the carnival submission form or email the host directly at mathconcepts101@gmail.com . Past posts and future hosts can be found in the Math and Multimedia Carnival List of Posts.

You may also want to visit the most recent carnivals.

The Math and Multimedia Carnival is looking for hosts. If you are interested, you can contact me at mathandmultimedia@gmail.com.  Hosting a carnival is one of the fastest ways to promote your blog, so it's worth trying.

#### 1 comment:

1. Thank you for including our IMACS blog in this excellent collection!

Natasha Chen