The EEI Curriculum Catalog is a useful resource that includes materials for teaching the third and fourth grade  California Native American unit of study.

From the EEI website:

The California Education and the Environment Initiative (EEI) is a free K-12 curriculum that teaches critical skills in science and history-social science using environmental topics, such as water and energy, as a lens.

The EEI Curriculum makes learning relevant and fun for students by engaging them in topics they care about – the air they breathe, the water they drink, and the food they eat. All content is California State Board of Education-approved and helps support Common Core and Next Generation Science Standards. Use the free EEI Curriculum to build your students’ understanding of their relationship to the environment and prepare them to be critical thinkers and 21st century problem solvers.

What Is EEI?

The California Education and the Environment Initiative (EEI) is part of statewide effort to ensure all California K- 12 students are environmentally literate and can help shape a prosperous and sustainable world.

The EEI was signed into law in 2003 and mandated the creation of a standards-based curriculum to bring education about the environment into California’s K-12 schools. The EEI Curriculum consists of 85 state-adopted and approved science and history-social science units that complement existing instructional materials, allowing teachers to substitute EEI lessons for portions of their current textbooks.