Students' understanding of stoichiometry using BPR holistic approach

Date of Publication

2014

Document Type

Master's Thesis

Degree Name

Master of Science in Teaching Major in Chemistry

Subject Categories

Chemistry

College

Br. Andrew Gonzalez FSC College of Education

Department/Unit

Science Education

Thesis Adviser

Maricar S. Prudente

Defense Panel Chair

Lydia S. Roleda

Defense Panel Member

Socorro E. Aguja

Emmanuel V. Garcia

Abstract/Summary

This study investigated the effectiveness of BPR (Block Model, Particulate Diagram and Reflective Writing) Holistic approach in understanding basic stoichiometry and mole ratios. It attempted to explore students conceptual understanding and perception within 10 periods of intervention. One intact class of third year high school students of Philippine Cultural College in the fourth quarter of the school year 2013-2014, was chosen as subject of the study. To determine students conceptual understanding, the Conceptual Test on Stoichiometry (CTS), developed by the researcher and validated by experts was administered prior and after the intervention. The Stoichiometry Problem Solving Test (SPST), also developed and validated by experts was administered to triangulate with the result in CTS and to determine students varying conceptual understanding in problem solving. The researcher-developed and expert-validated Students Perception Test on Stoichiometry Using BPR Holistic Approach (SPTS-BPR), semistructured interview and reflective journal were used to gauge students perception regarding the intervention employed. The result in the pre-CTS and post-CTS revealed that the class had standardized gain score of 0.33, with a z value of -4.94 at significance level =0.05. Therefore, there was a significant difference between the pre-CTS and the post-CTS. However, SPST result showed varying conceptual understanding of students in solving problems, and only 33% of the student passed the test. Moreover, SPTS-BPR result revealed that students have positive perception on the said approach as a whole. On the other hand, students expressed on the interview and on their reflective journal the difficulty they have encountered in using block model approach, and the ease of using particulate diagram in understanding and solving a stoichiometry problem. Hence, students preferred the use of particulate diagram more than block model approach when dealing with stoichiometric problems. Moreover, 50% of the interviewees find the use of reflective writing helpful to express the difficulty they encountered in the class during the discussion, while another 50% find it unnecessary.

Abstract Format

html

Language

English

Format

Electronic

Accession Number

CDTG006616

Shelf Location

Archives, The Learning Commons, 12F Henry Sy Sr. Hall

Physical Description

1 computer optical disc ; 4 3/4 in.

Keywords

Stoichiometry

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