Ninth Grade Integrated Science focuses on the theme of "Earth Systems." Earth, physical, space, and life science content are integrated in a curriculum with two primary goals. Special emphasis in the Core is given to the effects of biological processes on Earth systems. Three major concepts underlying the operation of Earth systems may be summarized as matter cycles, energy flows, and life webs. The web of life is intertwined with Earth's energy flows and matter cycles. Emphasis is placed on the inter-connections among Earth's systems and on understanding how alterations in one part may affect the system as a whole. This course consists of seven units, each with several assignments. You can find the introductory material for each unit by clicking on the "course materials" button. You can also find the assignments for each unit by clicking on the "assignments" button.