Six of the most widely used readability scales are briefly reviewed and their original source cited: the Dale-Chall Readability Formula, the Flesch "Reading Ease" Formula, the Fog Index, the Fry Readability Graph, the SMOG Grading Plan, and the Spache Readability Formula. (SJL)

After discussing the ease of using the Fry Readability Graph, the author applies it to biology, chemistry, and physics texts, and lists the results. He warns that textbook authors and classroom teachers should be aware of the potential impact that the reading level of a text can have on students. (KC)

Discusses history of the development of computer software to determine material readability and general design of readability software. Tables present summaries of: (1) parameters used by selected readability scales and their grade level applications; and (2) microcomputer software programs available, including readability techniques included in…