The Development of Activity Set for Acid-Base of Chemicals in Daily Life by Using Indicators Made from Common Plants in Locality

Abstract

The objectives of this article were to 1) develop acid-base testing activities. of chemicals in daily life using indicators extracted from local materials, 2) to compare the learning achievement from the acid-base testing activities of chemicals in daily life, and 3) to study student satisfaction from organizing learning activities by doing chemical tests in daily life using local indicators to promote scientific process skills, fundamentals of science learning subject groups. The sample group used in this research was 30 students in Mathayomsuksa-2 of Ban-Kwao Wittayayon School. The tools used in this research are: Learning activities from acid-base testing activities of chemicals in daily life using indicators extracted from local materials, local student learning comprehension test and the satisfaction questionnaire for the implementation of the learning management and the implementation of the activities. The statistics used to analyze the data were mean, standard deviation, and the statistic used to test the hypothesis was the t-test for dependent sample. The results showed that From the development of acid-base testing activities from plant extracts and local materials. The extracts suitable for testing were butterfly pea, purple cabbage, orchid and rose. There was a significant difference in student understanding between before and after class. where students can tell about changes in acid-base in daily life. In addition, students are satisfied with teaching activities that allow students to get hands-on practice using local natural plant extracts. It can be applied in the promotion of teaching and learning as well.