“COUNTING DROPS AND OBSERVING COLOR”: TEACHERS’ AND STUDENTS’ FIRST EXPERIENCES IN SMALL-SCALE CHEMISTRY PRACTICUM OF ACID-BASE SOLUTIONS

Abstract

This study introduces a small-scale chemistry practicum technique with the concept of acid-base identification, determination of pH with indicators, and neutralization reactions with the concept of titration. The first experiences of teachers and students in small-scale chemistry practicums are revealed. Action research was carried out to introduce small-scale chemistry (SSC) practicum techniques as solutions for minimizing chemical tools and materials, as well as the availability of space for school chemistry practicums. This study involved 26 teacher participants in the initial process of providing experience and 36 student participants involved in the process of organizing practical classes. Quantitative data including teacher responses and student responses to the SSC practicum in the pilot class were collected using a response questionnaire on the activity. Qualitative data were collected through observation, interviews, and documentation. The practicum involves qualitative observations and quantitative calculations. The qualitative aspect relates to the observation of color changes that occur in a mixture of solutions made of acid and base solutions with certain compositions. Teachers get a lot of inspiration in terms of chemistry practicum with less material requirements, as well as modifying the tools used for laboratory activities. The package of tools and materials provided an illustration for them that practicum activities do not have to be carried out in a laboratory room, but can also be practiced in conventional classrooms, and even carried out independently by students at home. Students have a unique experience in the process of counting the number of droplets as it requires careful concentration and observation.