Many countries in Sub-Saharan Africa have used non-traditional teacher education programs to address the perpetual problem of inadequate provision of trained teachers. Using the bioecological systems theory, the present study examined untrained teacher trainees' perceptions about the prospects and challenges of upgrading untrained teachers in…

This dissertation conducted a science classroom intervention using two instructional approaches, computational modeling and paper-based pictorial modeling, in the context of food webs. A series of research papers were written on the impact of the intervention on students' attitudes and learning, and on teachers via professional development and…

We propose a multidimensional model that can be used to formulate a research agenda that aims to explore how innovations in teaching and instruction influence the science of learning within educational contexts. This model depicts the complexity of relationships between variables within: classrooms, the total school program, and inside and outside…