Geologic Puzzles: Morrison Formation part of Interactive Lectures:Examples
Images of faulted strata, tilted turbidites, and beach rocks bring the field into the classroom, giving students practice in doing what geoscientists do. These images are examples of geologic puzzles. -

Classification of Igneous Rocks part of Cutting Edge:Introductory Courses:Activities
This is a Think-Pair-Share activity in which I show class photos of a range of igneous rocks in terms of composition and texture. After they complete the activity I fill in the voids in their knowledge with lecture ...