For students, textbooks are a source of knowledge and an important learning material. For this reason, textbooks must contain appropriate content. In this research, our aim was to examine of biology subjects on secondary school 7 th grade science textbook in terms of scientific content. The data were analyzed using document analysis. Based on criteria such as the book's scientific content, knowledge deficiency, erroneous information and misrepresentations, three experts in the field of biology were assigned the responsibility of reviewing the textbook. The findings of the research, categorized based on the chapters and units of the textbook included a discovery of scientific flaws, insufficient explanations on topics such as ''Systems of the Body'', ''Force and Energy'', ''Human's relationship with the environment'' and various other errors regarding the assessment questions. Recommendations therefore included a review of the said textbook in order to correct all such errors.

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Özet

The accurateness of the scientific content in the course books is an important factor to prevent learners' alternative conceptions or misunderstandings. From this point of view, the aim of the current study is to scientifically investigate the biology topics in the 8 th grade science textbook of the Ministry of National Education (MoNE). The researchers analyzed the MoNE Lower Secondary Schools 8 th Grade Science Textbook, which has been adopted as the official book for a 5-year period beginning from the 2016-2017 school year, in terms of the scientific content. The textbook was evaluated in terms of criteria such as incorrect or missing information and alternative conceptions. Document analysis was used to analyze the data. The findings of the research showed that there were missing or incorrect information and alternative conceptions in the units of Human Reproduction, Growth and Development and Living Creatures and Energy Relations, and in some of the unit evaluation questions.

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ÖZDers kitapları, öğretim programının içerisinde yer alan konuların planlı bir şekilde aktarılmasında ve öğrencilere kavramların öğretilmesinde kullanılan öğretim materyalleridir. Öğrencilerde kavram yanılgılarının oluşmaması için ders kitaplarında bilimsel içerik bakımından hataların yer almaması gerekmektedir. Bu araştırmada 2018-2019 eğitim öğretim yılı itibari ile değişen öğretim programına uygun olarak Millî Eğitim Bakanlığı tarafından beş sene süre ile 11. sınıf biyoloji dersinde okutulması onaylanmış ders kitabındaki biyoloji öğrenme alanına ait konuların bilimsel içerik açısından incelenmesi amaçlanmıştır. Veriler, doküman analizi yöntemi kullanılarak incelenmiştir. Araştırmada, insan fizyolojisi ile komünite ve popülasyon ekolojisi ünitelerinde yer alan konular incelenmiştir. Bulgular, ünite ve bölümlere göre gruplandırılarak verilmiştir. Araştırma sonucunda, insan fizyolojisi, komünite ve popülasyon ekolojisi üniteleri ve ünite değerlendirme sorularında bilimsel hataların olduğu tespit edilmiştir. Ayrıca tespit edilen bilimsel hatalara yönelik doğru bilgiler, uluslararası geçerliliği olan kaynaklardaki bilgiler ışığında verilmiştir. ABSTRACTTextbooks are the teaching materials used in the transfer of the subjects in the curriculum and teaching concepts to students in a planned way. In order to prevent misconceptions, scientific mistakes should not be included in textbooks. The aim of this study is to examine the topics in the 11th biology textbook, used for 2018-2019 academic year, approved by the Ministry of National Education of Turkey. Data were generated using the document analysis method. In the study, human physiology, community and population ecology units were examined. The results were grouped according to the units and chapters. As a result of the research, it was determined that there are scientific mistakes in human physiology, community and population ecology units and unit evaluation questions. In addition, the correct information for the identified scientific mistakes was given in the light of the information in internationally available sources.

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