There is a popular bumper sticker slogan which advises us to ‘Think Globally, Act Locally’. But what does it really mean to ‘think globally’? One meaning could be to try to estimate the global consequences of the things you do. Here is one way to go about this.
PUMAS:the Online Journal of Math and Science Examples for Pre-College Education
Practical Uses of Math and Science (PUMAS)
Frolking S, Rosentrater L. 1999. Learning to think globally. PUMAS (Practical Uses of Math and Science). The On-line Journal of Math and Science Examples for Pre-College Education, http://pumas.jpl.nasa.gov