Case-based pedagogy as a strategy to effectively weave theory, practice, and problem-solving in preservice teacher preparation has resulted in a national team case competition. Teams of preservice teachers from five teacher preparation institutions were invited to the University of Virginia to independently solve a classroom dilemma, present a written analysis, and prepare an oral presentation and defense. This paper describes the experience of an educational psychologist in mentoring and preparing one team of undergraduate preservice teachers (who had gained preliminary experience in solving case study dilemmas through an educational psychology course), selected for the national competition. Coaching techniques encouraged the preservice teachers to cooperate, to compete, to develop individual areas of expertise, and to access computers, reference, and faculty resources in solving case dilemmas. Collaboration strategies, skills, and resources developed are illustrated, and the paper concludes with implications for connecting education and human resources within and beyond teacher preparation programs. (Contains 16 references.) (LL)