THE DEVELOPMENT OF SMALL-SCALE SCIENCE LABORATORY DIRECTIONS ON ACID-BASE FOR ELEVENTH GRADE STUDENTS การพัฒนาบทปฏิบัติการวิทยาศาสตร์แบบย่อส่วน เรื่อง กรด-เบส สำหรับนักเรียนชั้นมัธยมศึกษาปีที่ 5
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Abstract
The objectives of this research were to develop small-scale chemistry experimental kits and small-scale science laboratory directions on acid-base for eleventh grade students has an efficiency with the criterion standard of 70/70, to compare learning achievement and scientific concepts of eleventh grade students before and after learning by using small-scale science laboratory directions on acid-base and after learning with criterion standard of 70%. The participants of this research were 27 eleventh grade students from medium-size secondary schools in Chonburi The research instruments consisted of the small-scale science laboratory directions on acid-base for eleventh grade students, the learning achievement test and the scientific concepts test on acid-base. The data were analyzed by means (), standard deviation (SD), t-test for dependent samples and t-test for one samples. The results indicated that the developing small-scale chemistry experimental kits on acid-base for eleventh grade students were comprised of 5 experimental kits used for 6 chapters in small-scale science laboratory directions which had an efficiency of 73.18/74.81 which was higher than the criterion standard of 70/70. the post-test mean scores of learning achievement of students after learning by using the small-scale science laboratory directions on acid-base were higher than pre-test and the post-test mean scores were higher than the criterion standard of 70% at .05 level and the scientific concepts of students after learning by using the small-scale science laboratory directions on acid-base were higher than before learning and the post-test mean scores were higher than the criterion standard of 70% at .05 level.
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