Month: April 2011

Folding a Hyperbola

High School Algebra, High School Mathematics

Below is an activity that uses paper folding to create a parabola.  The steps are as follows.

First, draw a circle on a piece of paper and draw a point outside the circle. Second, draw a point on any location on the circumference of the circle. Third, fold the paper such that the point on the circle and the point outside the circle are coinciding, and then make a crease.

Fourth, repeat the second and third steps over and over again. 

The border of the creases made on the paper will form a hyperbola. The more number of folds, the more apparent the hyperbola.

The construction above is simulated in the Folding a Hyperbola applet at GeoGebra Applet Central.

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How to create a Facebook page for your blog

Facebook, Software Tutorials

Facebook is undoubtedly one of the most famous or probably the most famous social networking site, so we will take advantage of its popularity to promote our blog.  One easy way to promote a blog is through a Facebook Page.  Many of Math and Multimedia’s followers use its Facebook Page to check for updates.

Since creating a Facebook Page is very easy, we will create one for your blog. However, before following the tutorial below, be sure that you have a Facebook account. » Read more

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8000+ Mathematics, Physics, and Engineering Applets

Resources and Freebies
Applets are very useful in mathematical explorations, so I made  list of more than 8000 applets from 10 different websites and blogs below. I hope you’ll find them helpful.

  1. Analyze Math. Tutorials and problems with applets.
  2. Cut the Knot. More than 1000 Java applets.  Includes content topics from Arithmetic, Algebra, Geometry, Probability, Fractals and Chaos and more.
  3. GeoGebra Applet Central.  More than 100 GeoGebra applets and growing on K-12 Mathematics which I created together with a group of bloggers.
  4. Manipula Math with Java. About 300 math applets from a (Japanese-owned?) website.
  5. Larry Green’s Applet Page. 100+ applets written by Larry Green of Lake Tahoe Community College.
  6. Math, Physics and Engineering Applets by Paul Falstad
  7. Illuminations. More than 100 K-12  applets from NCTM.
  8. Interactivate. Hundreds of applets from numbers to calculus.
  9. PLU Applets. Java applets from arithmetic to abstract algebra from Pacific Lutheran University
  10. Wolfram Demonstrations. Nearly 7000 applets created with Mathematica. Some of the major categories are mathematics, computations, physical sciences, life sciences, business and social systems, systems, models and methods, creative arts, and more.
  11. GeoGebraTube. More than 2100 applets created with GeoGebra.


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