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The influence of heuristical strategies upon the level of two experimental classes is studied in this paper. The didactic experiment took place at secondary school in Cluj-Napoca, in 2008-2009 school year. The study theme “The Unsaturated Hydrocarbons – Alkenes” has been efficiently learned by using the most active methods: laboratory experiment, brain storming, modeling, problematization. The results obtained in the research demonstrate the efficiency of interactive methods in teaching-learning process.  \nKey Words: heuristical strategies, interactive methods, brain storming, laboratory experiment.  \n1. Introduction  \nIn recent years, international studies and surveys on science and technology have shown that many countries are increasingly concerned with the lack of attractiveness that scientific careers have among young people and, generally speaking, with the insufficient diffusion of scientific culture (Valente A. [et. al](et. al)., 2008)  \nLearning science following an inquiry-based methodology is particularly effective in the direction of motivating students to learn how to define the framework for their investigation: to select, evaluate and manage scientific documentation in order to analyze a scientific problem; to look for a debate more than a fast-packaged conclusion (Naumescu A., 1992) .  \nTeaching has importance (meaning) only if it is a communication with the other two functions of the education: learning and evaluation. The learning theories offer many possibilities which are adaptable to the characteristics of the whole class, of each student and of each teacher who plans the didactic measures in conformity with the objectives (aims) and the competence (the abilities) (Naumescu A., 2006) . The organization of learning activities has to be in conformity with the objectives, competencesand the contents in order to establish an active learning. The teacher has different ways of organization the classroom activities in conformity with the characteristics of the whole class, of the individuals, these activities help the teacher to see the progress of the students in learning chemistry or other sciences (Naumescu Kozan A., Glodian M., 2010) . So, the Chemistry teacher has to develop the specific thinking of his students so that the students can be good at other scientific and technological science (Kachan M. et al., 2006). In instructing and teaching the students, the teacher has to have some abilities: a correct and scientific knowledge, a critical analysis of the scientific facts, to motivate and stimulate the students, the project the didactic measures of the learning units in conformity with the students need, the projection of on objective to practice the diagnosis, summative, evaluation, to initiate the students to practice lockstep, individual work (Bell R. L. et al., 2000) . Evaluation has to use plenty of theories and more evaluating instruments. The forms of evaluation (oral, written and practical) are focused on the objectives, so that the feed-back takes place in each teaching sequencesand thus the continuous evaluation is essential (Zeidler D. L., Nichols B.H., 2009) .  \nReceived 15 February 2011, accepted 8 March 2011, published 30 March 2011.  \n2. Experimental part  \nThe purpose of the experiment  \nThe main objective of the didactic research was: the influence of heuristical strategies on the study theme “The Unsaturated Hydrocarbons – Alkenes”.  \nThe hypothesis of the didactic experiment was: the heuristical strategies and the continuous evaluation will influence the level of the two experimental classes and make the possibility to followup the feed-back at the end of each lesson.  \nThe didactic experiment took place at Secondary School, from Cluj, in the school year 2008-2009 the first term. Two classes were taken in the experiment: X-A","cbCaiftwQe7gvTJm","https://ap.wps.com/l/cbCaiftwQe7gvTJm","pdf",276566,14,"English","# Introduction\n# Experimental part\n## The purpose of the experiment\n## General objectives and experimental setup\n## Initial test results","[{\"question\":\"What does the study investigate about teaching methods?\",\"answer\":\"The paper studies the influence of heuristical strategies on the learning level of two experimental classes using the theme “The Unsaturated Hydrocarbons – Alkenes.”\"},{\"question\":\"Where and when was the didactic experiment conducted?\",\"answer\":\"It took place in a secondary school in Cluj-Napoca during the 2008–2009 school year.\"},{\"question\":\"Which teaching approaches are highlighted for learning the theme?\",\"answer\":\"The study emphasizes active methods such as laboratory experiment, brain storming, modeling, and problematization.\"}]","HEURISTICAL STRATEGIES ON THE STUDY THEME“THE UNSATURATED HYDROCARBONS –ALKENES” - Volume 4 - Research paper | PDF",1792065379,35]