《Dr. Bones》Online STEM Course This course is based on the adventure story of members of the Snapask expedition team Ace and Sara in pursuit of the missing Dr. Bones skeleton, and uses precious dinosaur fossils from all over the world as the main axis to teach students knowledge about mathematics, history, biology, chemistry and geography. Most of the content in the course will be presented in the form of animation, accompanied by teaching videos from Snapask elite tutors and real video materials for teaching. Course content includes: [Biological Category] Different ecological environments on the earth, ecological environments and animal relationships, biological classification, vertebrates and invertebrates, understanding of blood, blood vessels and body temperature regulation, understanding of sensory organs, understanding of ball and socket joints [Geography] The structure and function of the earth, the relationship between humans and rivers, geysers and hot springs [Chemistry Category] Causes and effects of acid rain, renewable energy and non-renewable energy, fossil formation process [Mathematics] Fibonacci coefficient [History Category] History of Fossil Warfare