This science book was designed for third grade students. It follows the Bahamas Ministry of Education third grade Science curriculum and was created specifically with the third-grade student and teacher in mind. It includes in class assignments, homework assignments, and projects for each lesson. With this book, it is my hope to educate third graders about the diversity and unity that characterize life, the general structure, organization, and functions of cells in organisms, the composition and structure of the universe and earth's place in it, basic features of the earth, basic concepts about the structure and properties of matter, and ways to conserve and manage the environment.