Availability of Critical Thinking Skills in Chemistry Textbooks and Textbooks of Activities and Practical Experiments of Secondary Schools, Yemen

The research aimed to identify to what extent critical thinking skills are available in chemistry textbooks and textbooks of activities and practical experiments of secondary schools in Yemen. To achieve this objective, a list of critical thinking skills, which consisted of (29) indicators, was developed. They were distributed to five main skills: (5) inference skills, (6) identifying assumptions skills, (6) evaluating discussion skills, (7) interpretation skills, and deduction skills. After checking the validating and reliability of the list, the content analysis of textbooks was conducted to ascertain whether the indicators were explicitly or implicitly unavailable. Major results revealed that critical thinking skills were available in secondary school chemistry textbooks of a medium degree of (%58.3), whereas they were available in the textbooks of activities with a lower degree of (%28).