1. The following slides are a small sample representing the myriad issues I noticed in the McGraw-Hill course materials (aside from wrong or otherwise problematic test answers, which are shown separately). These include typographical and grammatical errors; bugs; and broken or unfinished content. --Serena Golden

3. This content, by contrast, seems to have been inadvertently doubled.

4. An overlooked note to an editor (and a grammatical error on the right). Several such notes appeared in the lesson presentations.

5. Typographical and grammatical errors were particularly numerous in a slide show that accompanied one chapter as bonus content; many of the slides contained errors like these.

6. But the lesson presentations were filled with such errors as well, as these examples of a lesson presentation slide (above) and a test question (left) show.

7. Text often seemed misplaced, as here; many such apparent non sequiturs occurred throughout the materials.

8. There were also a number of obvious errors in the actual content.

9. This (rather inexplicable) mathematical mistake is another example.

10. Much content, like this pie chart, simply seemed lazily done.

11. There were many bugs in the “self-check” questions; for example, these answers don’t match the questions at all.