Students will enjoy learning about caves and caverns, one of nature’s grandest landforms, with these fact and opinions. This unit is perfect for landform lessons and field trips.This unit includes full color and B&W versions.* Fact and Opinion Activity: Facts Sorting Header Page, Opinions Sorting Header Page, 28 sorting cards, Facts Recording Sheet and Opinions Recording Sheet* Graphic Organizers: can/have/are chart, KWL chart, bubble map, and circle map* Common Noun or Proper Noun?: so