@article {227,
	title = {PRE-SERVICE PHYSICS TEACHERS{\textquoteright} CONCEPT MAPS REPRESENTING RELATIONAL STRUCTURE OF PHYSICS CONCEPTS},
	journal = {Journal of Baltic Science Education},
	volume = {10},
	year = {2011},
	month = {September/2011},
	type = {Original article},
	chapter = {183-194 },
	abstract = {In this study, a parsimonious set of quantities is developed to characterise and evaluate the quality of concept maps. It is shown here how such a set can be based on measurements of the connectivity, clustering and cohesion of concept maps. A structural model of the data is introduced so that concept maps can be evaluated and classified by using only two quantities called here richness of content (D) and quality of structure (q). The model is used in monitoring changes in the concept maps (N=33) consisting of two sets of maps (initial and final ones), made before and after teaching. Such an approach gives access to monitor changes of the concept maps during a teaching sequence.},
	keywords = {knowledge organisation, learning process, physics concept maps},
	issn = {1648-3898},
	url = {http://oaji.net/articles/2014/987-1410547320.pdf},
	author = {Maija Nousiainen and Ismo T. Koponen}
}
@article {98,
	title = {UNDERSTANDING THE PHOTON CONCEPT AND THE QUANTUM NATURE OF LIGHT: A CASE STUDY OF LEARNING DURING AN INSTRUCTIONAL UNIT DESIGNED FOR STUDENT TEACHERS},
	journal = {Journal of Baltic Science Education},
	volume = {4},
	year = {2005},
	month = {October/2005},
	type = {Original article},
	chapter = {46-54},
	abstract = {Many teachers in upper secondary school find that teaching about the quantum nature of light and the photon concept is a demanding and difficult task, and that the university level instruction gives little if any support to overcome these difficulties. An instructional unit, which uses classical analogies in supporting the formation of new concepts and ideas, has been developed in order to help student teachers to acquire better qualitative understanding about the quantum nature of light and the photon concept. It is shown, that by using this approach, good learning results are obtained and student teachers develop physically sound conceptions of the quantum nature of light and the photon concept.},
	keywords = {history of physics, modern physics, teacher education},
	issn = {1648-3898},
	url = {http://oaji.net/articles/2016/987-1481285067.pdf},
	author = {Ismo T. Koponen and Matti H. Heikkinen}
}
