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We examine the influence of ownership structure on a blockholder’s power in a firm. We first describe the presence and ownership stakes of blockholders in a comprehensive sample of US firms. We develop a measure of the influence of the ownership structure on a blockholder’s power and show that an average blockholder loses 12% of her potential power due to the presence and size of the ownership stakes of other blockholders. Further, the influence of ownership structure varies systematically with a blockholder’s rank and identity, with the second and nonfamily manager blockholders experiencing the largest loss of power.

The purpose of this paper is to examine a seventh grade mathematics lesson in Iran and Japan through a comparative analysis for illuminating what actually goes on in the classroom in different cultural contexts. Emphasis is here placed on Iranian oral and Japanese literal teaching traditions.

Qualitative research methods were employed for data collection, including cross-cultural lesson analysis meetings in Iran and Japan and semi-structured interviews with the participants of the meetings. In doing this, the study plans to make apparent the structure of meaning hidden in lesson practice – a so-called cultural script of teaching – by comparing this practice in cultural context, through the eyes of educators from different socio-cultural perspectives.

The findings are intended to clarify the mathematical communication approach used in Iran and Japan. Mathematical communication proceeds through speaking rather than writing in Iran, discussing before summarizing and taking notes (speaking/listening), while in Japan, it proceeds through writing before telling and speaking (writing/reading).

This study delivers a transnational learning opportunity for educators to learn how to provide evidence-based analysis of a lesson for professional learning to raise the quality of teaching. However, as this is a case study, it opens up the possibility for comparative lesson analysis of more sample lessons, and how active learning and dialogic teaching can be designed in different educational contexts. In addition, it may be interesting for educators to see how this comparative lesson analysis helps practitioners to revise their teaching. These are very important research questions which the researcher hopes to cover in his next manuscript.

Comparative lesson analysis has the potential to expand more “research in practice” for designing mathematics lessons from the perspective of the students – so-called “customized teaching.” In addition, how the silent process of each individual student in the lesson has impacted on their learning and understanding – so-called “personalized learning” – is one of the issues arising from the case studies.

The value of comparative lesson analysis as a lens is in its ability to reveal to educators their own unconscious teaching script. It provides an opportunity for evidence-based critiques of our own teaching traditions that we accept culturally, share tacitly and may not even be aware of in the construction process.

This study combines careful measurement with “insider” and “outsider” perspectives to provide a deeper understanding of the real world of the classroom and the cultural context of teaching.