CK-12 now offers a unified, modernized FlexBook 2.0 platform, a free and flexible hub for educators to access and customize high-quality content across all K-12 STEM subjects and more. Through the teacher account dashboard, you can easily assign standards-aligned digital textbooks, videos, flashcards, simulations, and adaptive practice modules tailored to your students' needs and aligned with Common Core, NGSS, and other educational frameworks. The platform also includes Flexi, an AI-powered tutor that supports students with step-by-step explanations, homework help, and equation solving across science and math topics--all for free. Teachers can monitor student progress via class analytics, upload their own materials, and assign custom activities including concept maps and assessments using an intuitive interface. Additionally, CK,'?'12 offers live webinars, a Certified Educator Program, and integration options with tools like Google Classroom, Schoology, and Canvas.

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