PCR 1.0 contained artwork and instructional materials to teach polymerase chain reaction (PCR), a technique used to amplify a single or few copies of a piece of DNA across several orders of magnitude, generating thousands to millions of copies of a particular DNA sequence. The materials included diagrams, worksheets, and lesson plans to help students understand how PCR works and its applications in science, medicine, forensics, and many other fields by making millions of copies of specific DNA sequences.