This lesson plan involves a 4-hour field trip for 3rd grade students to Diamond Valley Lake to learn about science and geography. Students will explore fossils, animal origins, and the water cycle hands-on. They will map sections of the lake and discuss what they learned. The goal is for students to understand evolution, extinction, and how the environment has changed over time by experiencing it firsthand. The teacher will assess student learning through a rubric and reflection on the effectiveness of the activity.