The Zero Footprint Calculator is designed for kids to determine the kind of impact their actions are having on the environment.  It’s very well done, and accessible to high-beginning and beyond English Language Learners.

I’ve placed the link on my Geography page on the bottom of the Europe section.

I know that might seem an odd location for it.  But the Geography book I use, for some reason, talks about the environment in their European unit.  Ordinarily, I try to use and follow textbooks minimally in my classes.  However, I’ve got to say the one we use, called World Views, is a very well-designed book for English Language Learners.