http://orcid.org/0000-0002-5658-6210
About the Authors
- Phillip J. Grimaldi
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Roles Conceptualization, Formal analysis, Investigation, Methodology, Project administration, Software, Visualization, Writing – original draft, Writing – review & editing
* E-mail: phillip.grimaldi@rice.edu
Affiliation OpenStax, Rice University, Houston, Texas, United States of America
- Debshila Basu Mallick
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Roles Conceptualization, Writing – review & editing
Affiliation OpenStax, Rice University, Houston, Texas, United States of America
- Andrew E. Waters
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Roles Conceptualization, Formal analysis, Writing – review & editing
Affiliation OpenStax, Rice University, Houston, Texas, United States of America
- Richard G. Baraniuk
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Roles Supervision, Writing – review & editing
Affiliation OpenStax, Rice University, Houston, Texas, United States of America
Competing Interests
Authors PJG, DBM, and AEW are employees of OpenStax, a non-profit OER textbook publisher based out of Rice University. RGB is the founder of OpenStax. This does not alter our adherence to PLOS ONE policies on sharing data and materials.