Astronomy Interactives

PDF versionPDF version
Horsehead Nebula, Bernard 33

ERN Item Type: 

  • Classroom Activities


David Hudgins (Rockhurst University), Kevin Lee (University of Nebraska), and Edward Prather (University of Arizona)


This site provides ranking tasks for teaching introductory astronomy. Pensil-and-paper versions as well as computer-based versions are available grouped by topic. New materials will be added as the computer-based versions are completed. It is anticipated that the pencil-and-paper versions will be photocopied for students and either used in the classrom or assigned as homework. The computer-based versions are intended as formative assignment tools to be used by students outside of class and have considerable utility in distance education courses.

Grade Level: 


Earth Science Big Ideas: 

Is this tagged to NGSS by the organization?: 


NGSS Crosscutting Concepts: 

NGSS Disciplinary Core Ideas: 

NGSS Science and Engineering Practices: 

NGSS Performance Expectations: