Kimyasal Gösterimlerin Genel Kimya Ders Kitaplarında Kullanımı

Çalışmanın amacı üniversitelerin fen bilgisi eğitimi anabilim dalında okutulan Genel Kimya ders kitaplarında elektrokimya ünitesindeki kimyasal gösterimleri çeşitli özellikler açısından incelemektir. Bu amaçla 17 Genel Kimya ders kitabı içerik analizine tabii tutulmuştur. İçerik analizi sürecinde alan yazında var olan bir liste kullanılmıştır. Analiz sonucunda elektrokimya ünitelerinde en az 2, en çok 52 ve toplam 289 gösterim olduğu ortaya çıkmıştır. Kitap başına düşen ortalama gösterim sayısı 17’dir (287/17). Sayfa başına düşen ortalama gösterim sayısı (gösterim sayısı/sayfa sayısı) 0,11 ila 1,22 arasında değişmektedir. Gösterimlerin büyük bir çoğunluğu konu anlatımı az bir kısmı ise ölçme-değerlendirme bölümünde yer almaktadır. Gösterimler en çok hibrit ve çoklu, en az makroskopik ve karma türündedir. Gösterimlerin yarısından fazlasının betimsel özelliklerinin açıktır. Gösterimlerin çoğunluğunun, metin ile ilişkili-bağlantılı ve başlıkların uygun olduğu görülmüştür. Çoklu gösterimlerin büyük bir kısmında bağlantılar yeterli iken, en çok makroskopik ve sembolik gösterimlerin bir arada bulunduğu ortaya çıkmıştır.

Anahtar Kelimeler:

Kimyasal gösterimler, elektrokimya

Use of Chemical Represenatations In General Chemistry Textbooks

The purpose of this study was to analyze characteristics of chemical representations in electrochemistry unit in General Chemistry textbooks. Content analysis of 17 General Chemistry textbooks was conducted using an existing rubric, which includes criteria for analysis of representations in textbooks, was utilized. Results indicated that total number of representations was 289 and average number of representations in a page ranged between 0,11 and 1,22. Most of the representations were used during teaching of the topic (in text) while number of representations used in assessment part was less. With regard to type, hybrid and multiple representations were utilized most, and macroscopic and mixed representations were the least frequent representations. More than half of the representations had explicit surface features and were completely related and linked to the text. Most of the representations’ captions were appropriate. Majority of multiple representations had sufficient links between their subordinates.

Keywords:

Chemical representations content analysis, general chemistry textbooks,

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