The questions you will answer with this FACTivity are: Are earthworms a part of your schoolyard habitat? and How much difference exists among the types of soil-dwelling organisms that live in your school yard? (Note: This FACTivity is best to do after a rainfall event in the fall and spring months when soil-dwelling organisms are more active.) Topics: Insects, Data Collection, Earthworms, Invasive Species, Outdoor Activity, Pitfall Trap, Student Research.