Biology
Core concepts for introductory level college course are addressed in sufficient detail, without overly complicating the material for this audience. Presentation is straightforward, but I find that supplementing with additional web based teaching tutorials and videos, compliments this basic text.
I found no errors, and if I felt certain topics needed further reinforcement or detail, there are many other free web based teaching resources such as those available from HHMI and Learn.Genetics.
The content covers the foundational concepts and therefore are unlikely to change or need radical revising in the short term. Updating with new information should be relatively straightforward, but as with all texts, the challenge will be to maintain brevity.
The text uses straightforward language, maintaining clarity in this field full of specialized vocabulary. Images are simple and clear.
The text is consistently organized into brief modules, that break down the ideas into manageable chunks of information.
The organization of the text makes it easy to assign very specific chapters and subsections according to the goals of the course, and to read these sections out of order. The sections, though integrated, can, in many cases stand alone as an introduction to the topics. When more depth is required, other web sites and tutorials can be added to the students' reading materials. This text is a nice way to help students organize those core ideas, all in one place.
The core concepts of biology can be taught in many different orders and there is not one best linear path through the material. Even when using the material in a different order than presented in the text, it does not affect the continuity and connectedness of the material.
The web based interface is simple and clean, and not overly complicated. External supplementary links are provided and augment the text. Navigation is obvious, reliable, intuitive, and resembles a traditional hard copy text, so that it should feel familiar to most students.
There are no grammatical errors, and the language is not overly complicated in terms of sentence structure and organization.
The text is not culturally insensitive, and material can easily be supplemented with current news articles and essays addressing the moral and ethical implications of current findings and technologies.
Where this text could be improved is in providing more practice questions and tutorials for students to check their understanding.