TY - JOUR AU - Lausin, Faridah PY - 2019/12/18 Y2 - 2024/03/29 TI - The The Effects of Using Particulate Diagrams on AIMS Students’ Conceptual Understanding of Stoichiometry JF - Abstract Proceedings International Scholars Conference JA - isc VL - 7 IS - 1 SE - DO - 10.35974/isc.v7i1.1709 UR - https://jurnal.unai.edu/index.php/isc/article/view/1709 SP - 1644-1660 AB - <p>The lack of conceptual understanding of stoichiometry among high school students is a valid<br>concern not only because it impedes students’ problem-solving ability in stoichiometry but<br>also because it is a significant predictor of performance in college Chemistry. High school<br>Chemistry teachers, therefore, should evaluate and update their classroom practices to best<br>support conceptual learning, especially in the topic of Stoichiometry. This study investigates<br>the effects of a visual-based pedagogical approach on the understanding of four concepts of<br>stoichiometry, namely the concepts of representative particles, mole ratio, limiting reagent<br>and theoretical yield among tenth-grade Chemistry students at AIMS, Saraburi, Thailand.<br>The approach involves systematic and extensive use of particulate diagrams in the instruction<br>of stoichiometry concepts in a real classroom setting. The study further examines the attitudes<br>of the students towards the method. The study employed the one- group pre-test post-test<br>design. A Conceptual Stoichiometry Test (CST), and an Attitude Towards the Use of Particle<br>Diagrams (ATPD) questionnaire were the instruments used to collect data. Data were<br>analyzed using the paired-sample t-test. Key results indicate that the approach had a<br>significant and positive effect on the students’ conceptual understanding of stoichiometry and<br>that the students generally had a favorable attitude towards the use of the method.</p> ER -