Part 1: The Beginning
This section covers lessons 1 - 7 after which students will perform a written assessment and a performance assessment.

Part 2: Continuing the Cycle
This section covers lessons 8 - 12 after which students will perform a written assessment and a performance assessment.

Part 3: Completing the Cycle
This section begins with the Anchor Activity Project in Lesson 13. Lessons 14 - 19 continue to develop an understanding of organisms. Lesson 20 allows students to demonstrate their understanding through both a written assessment and a performance assessment.