This study adopted a content-analysis method to examine the differences in how the topic of functions was handled by Finnish, Singaporean, and Taiwanese middle-grade mathematics textbooks for children ...

A rule for creating a "y" output from an "x" input. For example, the y value of the function f(x) = 15x is 30 if x is 2. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires ...