Updated — Www.cornelsen.de /webcodes

| Feature | Cornelsen webcode | Klett webcode | Westermann BiBox | Open educational resource (OER) | |---------|------------------|---------------|------------------|--------------------------------| | | Yes | Yes | No (paid license) | Yes (always) | | Account required | Sometimes | Sometimes | Yes | No | | Expiration | Yes (1–2 years) | Yes | Yes (subscription) | No | | Interactive exercises | Some | Some | Many | Varies | | LMS integration | No | No | Yes (partial) | Yes (via plugins) |

The page was dense with text, static black-and-white photos of the Berlin Airlift, and a sidebar of questions that seemed to grow more impossible by the second. www.cornelsen.de /webcodes

Lena sighed. She flipped the page, looking for a bibliography or a footnote. Instead, at the bottom of the page, nestled near the page number, she saw a small, distinct logo and a string of characters: followed by a code: g-78-3-a . | Feature | Cornelsen webcode | Klett webcode