<style face="normal" font="default" size="100%">SCIENTIFIC LITERACY: PROBLEMS OF SCIENCE EDUCATION IN BULGARIAN SCHOOL</style>

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<style face="normal" font="default" size="100%">SCIENTIFIC LITERACY: PROBLEMS OF SCIENCE EDUCATION IN BULGARIAN SCHOOL</style>

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<style face="normal" font="default" size="100%">CONSTRUCTIVIST LEARNING: DESCRIPTION, EXPLANATION, PREDICTION IN A CHEMISTRY CLASSROOM</style>