Understanding the Meaningfulness of Vocal and Instrumental Music Teachers' Hand Gestures Through the Teacher Behavior and Gesture Framework

This article considers the usefulness of the recently proposed “Teacher Behavior and Gesture (TBG) framework” for understanding the meaningfulness of teachers' hand gestures from an Enactive Cognition perspective (wherein cognition is fundamentally considered as embodied, embedded, enactive and extended). The framework is based on the main premise that gestures are part of an integral musical communicational process, fully integrated with speech and/or music-making and contextualized within specific teaching behaviors. By considering teachers' teaching behaviors, it is possible to realize teachers' pedagogical intentions. This, in turn, enables deeper understandings on teachers' gestures from the points of view of meaning, function and purpose. Application of the TBG framework across instrumental and vocal music pedagogical contexts (one-to-one, small, and large teaching groups) will bring relevant insights on developing practical scaffolding approaches, with direct implications on the quality of teaching and learning, for the benefit of both teachers and students

Role of plants in anticancer drug discovery

Cancer is one of the major causes of death and the number of new cases, as well as the number of individuals living with cancer, is expanding continuously. Worldwide the alarming rise in mortality rate due to cancer has fuelled the pursuit for effective anticancer agents to combat this disease. Finding novel and efficient compounds of natural origin has been a major point of concern for research in the pharmaceutical sciences. Plants have been seen to possess the potential to be excellent lead structures and to serve as a basis of promising therapeutic agents for cancer treatment. Many successful anti-cancer drugs currently in use or their analogues are plant derived and many more are under clinical trials. This review aims to highlight the invaluable role that plants have played, and continue to play, in the discovery of anticancer agents.We acknowledge the University of Pretoria for Postdoctoral fellowship to J.K. and B.A.M.http://www.elsevier.com/locate/phytolhb2017ChemistryGenetic