Month: June 2010

Investigating Polyhedrons with Poly

High School Geometry, Resources and Freebies, Teaching Tools, Web 2.0 Technology

Poly is a program for investigating polyhedral shapes. Poly can display polyhedral shapes in three main ways:

  • as a three-dimensional image,
  • as a flattened, two-dimensional net, and
  • as a topological embedding in the plane

The three-dimensional images may be interactively rotated and folded/unfolded. Physical models may be produced by printing out the flattened two-dimensional net, cutting around its perimeter, folding along the edges, and finally taping together neighboring faces.

Using Poly is fairly intuitive, so there is no need to post a tutorial about it. You can download Poly here.

Note: The text above was copied from the Poly readme file.

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Prime Series 2: The Intuition Behind The Infinitude of Prime Numbers

College Mathematics, Number Theory

Note: This is the third part of the Prime Number Series

  1. Part I: Introduction to Prime Numbers
  2. Part III: Formal Proof of the Infinitude of Prime Numbers

In Introduction to Prime Numbers, we conjectured that the number of prime numbers is decreasing as the counting numbers increase. In this post, we discuss intuitively that there is no greatest prime, or that there are infinitely many prime numbers.

Before proceeding with our discussion, it is noteworthy to remember that a number can either be prime or composite. We also know that composite numbers are product of primes.

Fragment of the original "Elements" by Euclid (via Wikimedia).

» Read more

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Important Announcements and Updates

Announcements, Miscellaneous

1.) Mathematics and Multimedia is now accepting articles for Mathematics and Multimedia Blog Carnival 1. The priority of the carnival are articles on technology integration, software tutorials, and explanation of mathematical concepts in K-12 mathematics.

To submit your entries, click here.

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2.) The Post List page is now open for comments. I would really appreciate if you let me know what you think.

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3.) For those who subscribed but have NOT yet answered the survey located at the right part of the blog, please answer YES if you are a subscriber of Math and Multimedia.  If you think this blog has helped you, I suppose two seconds to vote is not too much to ask 🙂

The data is quite important for me; I might upgrade my wordpress account depending on the number of subscribers.

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4.) Due to suggestions, the Mathematics and Multimedia Blog Carnival monthly issue will be every second Monday of the month. That is because the Let’s Play Math blog carnival is posted every first week and the Carnival of Mathematics is posted every third week. Hence, the first Math and Multimedia Blog Carnival well be posted on July 12, 2010.

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5.) If you have observed recently, I am posting Math articles on Mondays, Multimedia and miscellaneous topics on Wednesdays and GeoGebra Tutorials on Fridays. That pattern will continue for quite a while.

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