CK-12 FlexBook 2.0 vs Storyboard That

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.

Storyboard That is a web-based drag-and-drop tool for making storyboards, graphic organizers, comics, and other visual assets. Its creator combines scene layouts with a searchable library of characters and other items. Completed work can be exported as PDF, PowerPoint, Keynote, Google Slides, animated GIFs, and image files, or shared by email, social media, and blog embedding. The education offering includes more than 3,000 Common Core-aligned lesson plans and activities, plus integrations with classroom systems including Google Classroom, Canvas, Schoology, and D2L. The Free plan allows two storyboards per week, with a three-cell option, classic layout, and watermarked downloads. Individual costs $9.99 a month; Premium Teacher is $13.99 a month; Teams is $24.99 per user per month. The corporate edition has a 14-day trial. One privacy detail to weigh: Free Edition storyboards are public, can be viewed and copied by anyone, and may appear in Google search results.