The materials available via these codes vary depending on the book, but typically include:

Accessing your digital content is straightforward and does not usually require a complex registration process for basic webcodes.

Cornelsen defends the system. A spokesperson notes that the codes fund the development of adaptive learning algorithms—AI that detects when a student is struggling with subjunctive mood and automatically serves remedial exercises. "You cannot resell a Netflix subscription after you finish a series," the spokesperson told us. "Our codes are a service, not a physical good."