Uses trenoids, which are toothpicks colored with ink markers to represent a single taxa of organisms to illustrate ecological concepts in a student-centered learning environment. (YDS)

Describes an introductory course in geology for nonscience majors that involves students in laboratory exercises related to rock classification. (GS)

Introduces an investigative microbiology laboratory activity emphasizing critical thinking and experimental design in which students isolate and characterize a bacterium from a specific habitat. Explains the procedures of the laboratory including safety, sample collection, and isolation. (YDS)