When we were kids, some teachers had class penpals or had you practice your penmanship by writing a letter to an author. Try the 21st-century version of that by instituting an email exchange. Have your students exchange emails with students in another school, city, state, or country – especially valuable if both sets of students are studying the same material. Or arrange for a group of experts to accept emails from your students on a particular topic. Students who fail to see the “real world implications” of math or science may develop new interest if you can put them in touch with a video game designer, astronaut, or engineer who uses those skills every day. And for adults who might want to volunteer but feel pressed for time, email can be a great way to help out, since they can respond on their own schedule.