Offers an analogy between passing a written driving test and actually driving a vehicle, and evaluating textbooks by the number of syllables in words and by sentence length and the students' ability to actually read the textbook. Provides an open textbook inventory to evaluate how well students interact with the book. (JC)

The article discusses three features of content area textbooks that make them relatively easy to read, understand, and learn from--structure, coherence, and audience appropriateness. For each feature, the article describes the research basis for the feature, outlines problems with existing textbooks, and presents suggestions for evaluating…

High school biology content was rewritten in an attempt to reduce reading difficulties for students (N=265). After four weeks of use of reduced readability materials, no significant differences in achievement were apparent. (PB)

A British publisher conducted a readability study of its English language content area texts being used in foreign countries to determine how the texts could be made more readable. A cloze procedure assessment of a secondary school Hong Kong social studies series indicated that the English texts were too difficult for 91% of the pupils tested.…