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Tool: Old Egyptian Fractions for Android
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Go to: http://play.google.com/store/apps/details (opens a new window)
Description: This is the Android version of the Mathcats Old Egyptian Fractions:
Old Egyptian Math Cats knew fractions like 1/2 or 1/4 (one piece of a pie). But to make fractions like 3/4, they had to add pieces of pies like 1/2 + 1/4 = 3/4. Old Egyptian Math cats never repeated the same fraction when adding. They never wrote: 1/4 + 1/4 + 1/4 = 3/4

In ancient Egypt fractions with numerator 1 or always written as a sum of fractions with numerator 1. So the fraction 2/3 would be 1/2 +1/6. It has a certain logic if we consider a particular case: if we divide two loaves among three people will give each bread half (1/2) and a third of the bread is left half (1/6). With the Android app Old Egyptian Fractions can practice this type of decomposition in a very visual way.

Technology Type: Android 
Guide: User's Guide (opens a new window)
Author: Wendy Petti & Maurici Carbo
Language: English 
Cost: Does not require payment for use

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Tool: Old Egyptian Fractions
Courses: Math 1 Fractions
Math 2 Fractions
Math 3 Fractions
Math 4 Writing fractions, Equivalent fractions, Comparing and ordering, Simplifying fractions, Adding fractions, Subtracting fractions
Math 5 Writing fractions, Equivalent fractions, Comparing & ordering, Simplifying fractions, Adding fractions, Subtracting fractions, Multiplying fractions, Dividing fractions
Math 6 Writing fractions, Equivalent fractions, Comparing & ordering, Simplifying fractions, Adding fractions, Subtracting fractions, Multiplying fractions, Dividing fractions
Math 7 Writing fractions, Equivalent fractions, Comparing & ordering, Simplifying fractions, Adding fractions, Subtracting fractions, Multiplying fractions, Dividing fractions