Textbooks required a teacher to remove unneeded parts.
CTL’s free digital content is designed to match the content of the course, with very little excess which serves to serve different versions of the course.

Textbooks are slow to becoming digitized. This prevents teachers from editing content for their students and prevents adoption with one-to-one computing initiatives.
CTL’s curriculum is fully digital, and editable by teachers. These materials can be printed or, in schools where one-to-one efforts provide laptops, or equivalent, to students digitally.

Textbooks are updated infrequently.
CTL’s free digital curriculum is updated frequently using the feedback from teachers using it in classrooms around the world.

Textbooks provide little assistance with direct instruction
CTL’s IWB presentations provide the following advantages in respect to direct instruction:

Students no longer write down what the teacher is presenting since they already have a copy. Students only write what they need to better understand what was presented.

Teachers spend less time with their back to the class, more time working with students and the material.

Teachers can save the annotated IWB presentation files and print them for students who have been access.