“…The concept of "alive, " like so many other concepts in science, is itself dynamic and context dependent. Conversations about whether and why it makes sense to categorize viruses, organelles, dormant seeds, or the sun as alive are opportunities to both better understand student thinking and to give them opportunities to participate in and interrogate the dynamic practices of science (Duncan et al, 1991;Warren et al, 2001;Bang et al, 2013).…”