 The future depends on teachers who are reinventing the classroom and starting their students on journeys that will change the course of history. Shape the future. Teach. Learn more and receive free support at teach.org. Day one. The hardest day. The day you hear. This is a type of blood cancer. At the Leukemia and Lymphoma Society, we are here to help you move past day one. To learn more and get help on any day, visit LLS.org or call 1-800-955-4572.