  A goal of PER is to understand how students use math in physics contexts. To
investigate how students use math, we need to identify transitions between
conceptual sense-making about physical systems and using mathematics to
describe and to make predictions about those systems. We reviewed video of
students solving a variety of physics problems in small groups through the lens
of epistemic frames (e-frames). In this paper, we present a new e-frame, which
we are calling "Just Math", that is similar to the Worksheet e-frame, but is
characterized by brief, low-level, math-focused utterances between students.
Future work will focus on analyzing the transitions into and out of this
e-frame so that we may develop a more coherent understanding of students' use
of math in physics.
