I'm trying to embrace the positives of subbing, one of which is that I don't have to do any planning or grading so I have a fair amount of free time once the school day ends. I love reading books about teaching so I was wondering if any of you had any favorites? Books that really opened your eyes to something new, books that really made you think, books that you go back to over and over, anything like that. I'm open to books that are about education as a whole or books that are more nuts and bolts professional development. I'm an elementary ed teacher, special ed certified, starting a masters in literacy in January - at which point I imagine my free time will vanish - so I'm especially interested in those areas. Math is a big area of need for me so I'd love any good math books too.