## Adding and Subtracting Fractions Around the World

Following are links to Internet resources that can be used to support instruction of the Math World feature for this chapter.

B.U. Center for Polymer Studies Image Gallery
View fractal patterns found in nature and ones created by computers. Learn more about complex fractal patterns and how they are being used today in science. This interesting site is hosted by Boston University.
http://polymer.bu.edu:80/~trunfio/images.html

A Fractals Lesson
Want to know more about fractals? This site is a good place to start because it was created for elementary and middle school students. Fractals can be a complicated, high-level mathematics subject, but you'll find them explained here very simply.
http://math.rice.edu/~lanius/frac/

Babylonian and Egyptian Mathematics
This site provides information about Egyptian and Babylonian mathematics, specifically the Rhind papyrus. Learn about the Egyptian method for multiplication and for using fractions, as detailed in the papyrus. This is part of the large and detailed MacTutor History of Mathematics Archive, located at the University of St. Andrews in Scotland.
http://www-groups.dcs.st-and.ac.uk/~history/HistTopics/Babylonian_and_Egyptian.html

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