{"version":"1.0","type":"card","id":"765d731f-a70f-4f8d-9243-62075a3c1425","url":"https://stacklist.com/card/765d731f-a70f-4f8d-9243-62075a3c1425","title":"CK12 Foundation","source_url":"https://www.ck12.org/student/","note":"CK12 is a free and open-source initiative that provides high-quality educational materials, including textbooks, online courses, and learning resources. The foundation offers a range of subjects and formats to cater to different learning styles and needs.","image":{"url":"https://ucarecdn.com/a95db25f-bde1-4727-8512-56bb05da6473/","alt":"CK12 Foundation","width":1200,"height":630},"stack":{"id":"67059824-a565-4c78-a9a0-c897f4142845","title":"Studying📝","url":"https://stacklist.com/c/education/stack/67059824-a565-4c78-a9a0-c897f4142845"},"created_at":"2025-03-24T14:30:10.264Z","updated_at":null,"aco":{"summary":"The website appears to be experiencing technical difficulties. The error message indicates a problem connecting to the server, possibly due to high traffic or a configuration issue.  The website's owner or CloudFront users can find troubleshooting steps in the CloudFront documentation. \n","tags":[],"key_entities":[],"classification":null,"language":null,"confidence":null,"provenance":null,"token_counts":{"approximate":83},"content_hash":null,"acp_version":"0.2","body_available":false,"body_tokens":0,"visibility":"public","agent_accessible":true,"status":"final"},"_links":{"self":"/api/public/card/765d731f-a70f-4f8d-9243-62075a3c1425.json","html":"https://stacklist.com/card/765d731f-a70f-4f8d-9243-62075a3c1425","md":"/api/public/card/765d731f-a70f-4f8d-9243-62075a3c1425.md","stack_json":"/api/public/stack/67059824-a565-4c78-a9a0-c897f4142845.json"}}