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Activity: Galactic Exchange Problem
Go to: http://mathforum.org/escotpow/print_puzzler.ehtml?puzzle=31 (opens a new window)
Description: This problem allows students to investigate ratio and proportion, by discovering the exchange rate between different alien currencies (i.e. 7 circles have the same value as 3 triangles, etc.) By manipulating these exchange rates algebraically, students can come up with equations which represent the money needed to buy certain products. The use of symbols for coin types encourages a symbolic or alphabetic representation of each type of currency.
Technology Type: Java Applet 
Author: ESCOT
Language: English 
Cost: Does not require payment for use

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Lesson Plan: Galactic Exchange Teacher Resources
Technology PoW: Galactic Exchange II
Tool: Galactic Exchange
Courses: Math 4 Ratio and proportion
Math 5 Ratio and proportion
Math 6 Ratio and proportion
Math 7 Ratio and proportion