It doesn't take much to turn children into little social activists. Simply take note next time one of your kids wags her finger at you for wasting energy by not shutting off a light. You can thank your child's wonderful teacher for her new consciousness and embrace it by joining in on the movement. As more schools across the country introduce composting, your little one may start asking why you're throwing those orange peels in the regular trash. If you're at a loss for how to get started, check out this slideshow for some easy tips.