The social dimension of chemistry
is relevant and present in numerous
socio-scientific issues, for example, the use of plastics. These issues
can be covered at school by implementing strategies such as role-playing,
which allow different perspectives to be understood, thereby helping
to promote changes in attitude. This paper presents a pilot-study
about the design and results obtained in the role-playing game “Should
we ban single-use plastics?”, which covers the problem of plastics
in a secondary school chemistry class by way of argumentation and
decision making. Role-playing allows students to represent the viewpoints
of different important actors in this area both in favor of a ban
on their use (fisherman, environmental scientist, teenager, biodegradable
material manufacturer) and against (manufacturer of disposable surgical
products, teenager, worker in a plastic cutlery factory, director
of an oil company). This role-playing was implemented virtually for
a class of grade-8 school students (secondary schoolers in Spain).
The main findings include the promotion of learning about the chemical
aspects of plastics and the change in attitude of some students regarding
this issue after preparing and using arguments and counterarguments
based on scientific evidence in a debate. Role-playing is well received
by students and helps them to experience positive emotions. Students
were found to be very critical of the issue addressed, and the COVID-19
pandemic appeared to affect their decisions.