Science educators who work with fourth through sixth graders will find lesson plans and additional resources in this useful and educational website. These resources were created by a team of science educators located in Santa Barbara and Carpinteria, California in collaboration with the non-profit educational organization West Ed. At Science Matters, science teachers can download seven complete units, including units on 4th Grade Earth Science: Ecosystems; 5th Grade Physical Science: Chemistry and Matter; and 6th Grade Earth Science: Plate Tectonics. All unit materials, including lesson plans, assessments, and graphic organizers, can be downloaded in PDF formats. Each unit is also accompanied by a short introduction.