Did you know that the Yosemite Institute has lesson plans for educators? What better way to spread your love of Yosemite than to share it with young minds. The lesson plans are designed to teach kids not only about the geology and biodiversity of the park but also have Language Arts, Social Studies, and Technology plans.
You can check them out here:
http://www.yni.org/yi/yi_fieldscience/teacher_resources/lessonplans/