Every day, one new peer-reviewed research article from any ACS journal will be selected to be freely available and remain open access for all to read. These articles are selected based upon recommendations by editors of ACS Journals and made available as a service to the global research community. Articles from 2014 forward are eligible for nomination.
What does that mean for you? You might have a subscription to one ACS Journal, but only one. The Editors' Choice articles allow for extended access to content from all of the ACS Journals. If you do not have a subscription to any of the journals, I would encourage you to consider getting one, but in the meantime... you do not have to pay for a subscription to access these valuable articles. You don't even need to use any membership incentives that are offered with AACT or ACS membership (AACT and ACS members have access to 25 downloads of ACS Journal articles).
You can search by the name of the ACS Journal of your interest. Given that you are reading this ChemEd X Pick, I expect that you will be most interested in Journal of Chemical Education articles. There are several pages to explore.
You can also sign up for E-Alerts that will inform you when the newest list of articles are announced. A couple of my most recent favorites:
Towns, M. H., Guide To Developing High-Quality, Reliable, and Valid Multiple-Choice Assessments. J. Chem. Educ. 2014, 91 (9), 1426–1431.
Underwood, S. M.; Posey, L. A.; Herrington, D. G.; Carmel, J. H.; Cooper, M. M., Adapting Assessment Tasks To Support Three-Dimensional Learning. J. Chem. Educ. 2018, 95 (2), 207–217.
I hope you will browse through all of the JCE articles that have been granted Editors' Choice status. If you have not previously been a JCE reader, I think that these articles will help you realize what you have been missing.