Readability

I choose an online textbook for Algebra 1. The book is Understanding Algebra 1 by James W. Brennan. I chose a section from Chapter 5 which is about the solutions of a system of equations. Also, I chose to use the Flesch Method to determine the readability of the section. The statistics that popped up on my screen said that out of the 794 words in the section, there is 8 % passive sentences. Also, the Flesch Reading Ease is 56.7, and the Flesch-Kincaid Grade Level is 10.1. Since this is usually a class taught to freshmen (and sometimes eighth graders) this is a little bit surprised that the reading level is a whole grade level ahead. On average there were about 4 sentences per paragraph, and there were about 20 words per sentence.