When we do our more-or-less annual Donors Choose drive, we're always pleasantly surprised at how many readers are willing to throw in a few bucks to help school kids in poor areas learn science. So now we're not asking for money -- we're just saying thanks. (Of course there are always good projects looking for donations.) The best part of the process is the thank-you letters that trickle in from the classes that are helped. Here are some pictures from a few of those classes, using their new materials. Ms. D's classroom in Ohio bought science fair supplies.