Radioactive isotopes are an essential part of everyday
life and
an expanding area of research in the fields of medicine, catalysis,
and energy. Here, we describe an educational activity that introduces
the concept of radioactive decay and the corresponding benefits, risks,
and safe handling strategies. Specifically, we have developed an interactive
card game, Radioactivity and
235
U, as an activity which can be implemented
in a fully remote setting without the need for a trained instructor
or specific, previously acquired expertise. The card game consists
of 72 playing cards and 50 tokens and contains links to two remotely
accessible introductory videos on (1) fundamental concepts of radioactive
decay and (2) instructions on gameplay. The goal of this activity
is to familiarize students with the concepts of radioactive decay,
shielding, and applications of radioactive isotopes. Gameplay incentivizes
students to prevent, reduce, or limit exposure to a radioactive dose
by collecting and using shielding cards, while also learning facts
about radioactive isotopes and their stable congeners. The game was
tested with undergraduate college students. Pre- and postactivity
questionnaires measured the students’ familiarity and opinion
on the use and harm of radioactivity. The results indicate that the
activity is suitable to introduce basic concepts surrounding radionuclides,
radioactive decay, and shielding. We additionally observed a shift
in students’ opinions of nuclear chemistry and its role in
the world from neutral to slightly positive after the workshop.