The paper examines Teacher Education in Nigeria and the emerging technologies in the 21st century classroom. The concepts; emerging technologies, teacher education, and the roles of teachers in the 21st century classroom were analyzed. Availability, Accessibility and Competency were discussed in the light of the emerging technologies as an instructional mode in the classroom. This is an opinion based paper. It was concluded that the 21st century classroom requires a prepared teacher with an emerging technology-compliance and the right frame of mind. It was recommended among others; government's policies and legislative approaches that will support in practical terms availability, accessibility and professional development be formulated and implemented to ensure competency and motivation as well as monitoring and evaluation framework.