The document outlines 10 principles of effective teaching: 1) Care about helping students succeed and set high expectations, 2) Understand students but still expect good behavior and work, 3) Be clear about learning goals and share them with students, 4) Teach foundational knowledge and promote deep understanding, 5) Gradually release responsibility to students and provide support, 6) Provide feedback to help students improve, 7) Involve peer learning activities, 8) Manage behavior to support learning, 9) Regularly evaluate your impact on students, and 10) Continually seek to improve teaching practices. It then prompts discussion of challenges in teaching science and strategies effective teachers use to overcome them.