This collection consists of six lesson plans designed to help students construct an explanation of the geologic time scale based on personal connections, science concepts and nature of science ideas. Lesson Plan: Ages of Rock Lesson Plan Overview final 2.pdf Lesson One, Schoolyard Geology.pdf Lesson Two, Major Earth Events Part One.pdf Lesson Three, Major Earth Events Part Two.pdf Lesson Four, Classroom Geology.pdf Lesson Five, Deep Time Detectives.pdf Lesson Six, Ages of Rock.pdf Classroom Geology Presentation.pdf