期刊名称：Bulgarian Journal of Science and Education Policy
印刷版ISSN：1313-1958
电子版ISSN：1313-9118
出版年度：2012
卷号：6
期号：2
页码：292-320
出版社：University of Sofia
摘要：The article presents designed and refined an interactive-enhanced curriculum module for 9thgrade secondary school students in Bul-garia, based on environmental case studies. In the module activities students from two schools studied the local environments, performed observations and experiments, collected and analyzed data, prepared and presented posters and role plays, made connections between scientific processes and socio-scientific issues and drew conclusions about the global effects of locally created envi-ronmental problems. The students' critical observations of the quality of their surroundings helped them to make a list of local environmental problems, to apply interactive strategies in studying them and to propose rational scientifi-cally based solutions. In the study the attention was directed to the advantages and disadvantages of poster presentations and role playing and to the specific var currentpos,timer; function initialize() { timer=setInterval("scrollwindow()",10);} function sc(){clearInterval(timer); }function scrollwindow() { currentpos=document.body.scrollTop; window.scroll(0,++currentpos); if (currentpos != document.body.scrollTop) sc();} document.onmousedown=scdocument.ondblclick=initialize293 learning difficulties that students had to overcome. Students' achievements from the two experimental schools were assessed independently in order to give us insights into the details of learning using different interactive strate-gies and into the acquired performance skills, dependant on students' interests and personal abilities. The three versions of the module (traditional, dominat-ed by teacher presentation; poster preparation and presentation in which stu-dents imitate scientific team research; and role playing in which students not only study the local environmental problems but assume social roles to cope with them) demonstrate three levels of students learning independence. Spe-cific assessment tests and check lists were developed for analyzing, evaluating and comparing students' achievements in each version of the module and in each school. Ecological knowledge assessment tests were based on Bloom's taxonomy of educational objectives. Poster and role playing preparations and presentations were assessed by specific criteria, shown in the check lists
关键词：interactive-enhanced case study instruction; poster and role ;playing presentations; secondary school students' learning difficulties
