positive heuristic in Lakatos's account of scientific research programmes, guidance on how to build and develop the programme Share on FacebookTweet Related Articles: Constructivism’s new clothes02. Constructivism in science educationResearch programmesA Model of ScienceA Scientific Research Programme Author: Keith Former school and college science teacher, teacher educator, research supervisor, and research methods lecturer. Emeritus Professor of Science Education at the University of Cambridge. View all posts by Keith