The "Discover! Science" textbook set includes two sets of books (2A, 2B & 4A, 4B) along with an Instructor Guide. The textbooks cover the subject area of Science and are written in English, making them accessible to a wide range of students and educators. With engaging content and comprehensive coverage of scientific concepts, this textbook set is an invaluable resource for those looking to explore the world of science through informative and educational materials. 14x11x6, 9lbs