Curated OER
Tree Cookies
Learners identify heartwood, sapwood, and a tree's annual rings, infer from a tree's rings what damage or stress might have occurred in its life, and make a time-line of human history that coincides with a tree's rings.
Curated OER
Mission Era
Students examine the Mission Era. In this US History online lesson plan, students investigate daily life during the Mission Era as they participate in hands-on activities.