| This case study presents the experiences of three public school chemistry teachers in the transformation of their teaching processes with the use of ICT. The processes' characteristics are documented, what knowledge and skills were learned, and how it changed their organization, planning and teaching. D. H. Jonassen's (1999) ideas on learning strategies for the integration of ICT, from a constructivism and critical thinking perspective guide this study. MacFarlane and Sakellariou's (2002) ideas on the use of ICT in science teaching are also considered. The relationship between ICT, mind tools, learning strategies and teaching methods is studied.;The information was collected by semi-structured interviews, classroom observations and document analysis. The results were analyzed according to Wolcott's qualitative analysis model (1994), along with the QRS NVivo (2002) computer program.;The teachers learned to use several new ICT equipment and materials that facilitated their teaching and evaluation processes. Among these are the use of lab simulators, various software, CBL sensors, graphic calculators, electronic blackboards, and the Internet. They used teaching strategies for active, authentic, collaborative, constructive and reflective learning according to Jonassen. Their science teaching methods corresponds to the three types, according to MacFarlane and Sakellariou, which fosters scientific method skills and scientific reasoning for science literacy. The teachers, as facilitators and mediators, were inquirers of their students needs; investigators of their curricula, strategists as they organize their teaching skills and methods; experimenters with what they had learned; and collaborators as they fostered cooperative learning. Teachers' developed better lessons, lab exercises and assessment tools, such as rubrics, concept maps, comic strips, and others.;They also affirmed that their students demonstrated more motivation, participation, collaboration and learning; developed scientific and technological skills; worked real situations in a collaborative way guided by science standards; and that parents participated in their children's learning.;The conditions that facilitated these processes were the availability of technological resources, practical and continuous professional development, colleague communication and collaboration, the paradigmatic change towards constructivism with changes in assessment, school texts, curriculum and educational software, and a new generation of students and teachers open towards ICT, and pre-service teachers with technological skills. |