- A series of four posters showing the scale of the Universe, intended for the walls of science classrooms in secondary schools.
- Middle School, High School, Community College / Lower Division, College / Upper Division
- Grade 9, Grade 10, Grade 11, Grade 12
- Material Type:
- Richard Penn
- Date Added:
- Creative Commons Attribution Non-Commercial Share Alike
- Media Format:
- Graphics/Photos, Text/HTML
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