CK-12 FlexBook 2.0 vs Kortext

CK-12 FlexBook 2.0 provides customizable digital textbooks for K–12 subjects including science, math, and social studies. Lessons can combine text with PLIX interactives, simulations, adaptive practice, and related learning materials. Adaptive Practice draws questions from a library of more than 150,000 and adjusts selections based on student answers. Teachers can assign lessons, videos, interactives, and practice to whole classes or differentiated groups, then view progress reports. Educators can reorder chapters and edit or add content in customized FlexBooks. The service works in browsers on laptops, desktops, Chromebooks, tablets, and mobile devices, and is listed at free. Standalone Simulations and PLIX Interactives require a tablet-size screen or larger. Users may download PDFs of FlexBooks they create or customize, though interactive content may not render; CK-12-created PDFs are not downloadable. CK-12 says it is still converting all core content to FlexBook 2.0. Listed SSO or LMS partners include Google Classroom, Canvas, Schoology, Kiddom, Clever, and ClassLink.

Kortext provides higher education institutions with digital content discovery, study platforms, learner analytics, and staff workflows. Kortext study gives users access to more than five million eBooks and digital resources. Students can highlight and bookmark material, create rich-text notes and flashcards, and generate citations in referencing styles. The study experience includes accessibility features and reading options, integrates with learning management systems and libraries, and supports Microsoft Teams collaboration. Kortext IQ is an AI assistant for higher education that draws from trusted sources in a secure, ring-fenced environment. Kortext teach supports content selection, VLE-integrated course planning, assessment, grading, and learner engagement insights; Kortext insights presents faculty and student engagement data and trends for university leaders. Library licensing options include perpetual access, rental or subscription, demand-driven or patron-driven acquisition, and free OA/OER eBooks. The app is listed for Mac, iOS, Android, and Windows, with browser access also described. Institutional pricing is tailored to needs and budget; no specific price is listed.