Facilitating grade 11 students' conceptual understanding of fundamental acid-base models

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YAMAN F., AYAS A., Calik M.

TURKISH JOURNAL OF EDUCATION, cilt.8, sa.1, ss.16-32, 2019 (ESCI, TRDizin)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 8 Sayı: 1
  • Basım Tarihi: 2019
  • Doi Numarası: 10.19128/turje.449100
  • Dergi Adı: TURKISH JOURNAL OF EDUCATION
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.16-32
  • Anahtar Kelimeler: Acid-base models, Conceptual understanding, POE-based animated movies, ALTERNATIVE CONCEPTIONS, SCIENCE, MISUNDERSTANDINGS, KNOWLEDGE, EDUCATION, VIEWS
  • Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
  • Yozgat Bozok Üniversitesi Adresli: Evet

Özet

The purpose of this study was to enhance grade 11 students' conceptual understanding of fundamental acid-base models using Predict-Observe-Explain based animated movies (POE-AM). Twelve grade 11 students participated in the study. To collect data, the students' responses to the POE-AM tasks and interview protocols were used. The findings indicated that the POE-AM tasks positively improved the students' conceptual understanding of fundamental acid-base models and remedied any deficiency identified in pre-interviews and/or the 'predict' stage of the POE strategy. The results also showed that before implementation the students stated the main parts of acids and bases as H+ and OH- ions, respectively. After the implementation, they indicated that the Arrhenius model had the least adequate explanation to imply features/behaviors of acids and bases whilst the Lewis model did the most adequate acid-base definition to address their features/behaviors. Moreover, the study revealed that most of the students had alternative understanding or only partial understanding at the 'predict', but showed somewhat a sound understanding of these concepts at the 'observe' and 'explain' stages. The current study suggests that chemistry teachers should integrate the POE-AM into their classes to effectively promote student learning.