Periodically Rational

Discussions about STEM education

Welcome to Periodically Rational — a space for discussions on STEM education, teacher-created classroom tools, and mathematical ideas. Here you'll find interactive browser resources designed for real classrooms: ad-free, account-free, and built to spark genuine curiosity.

About Caleob King

Educator & Builder
Caleob King Portrait

Secondary educator specializing in science and mathematics. Dedicated to creating intuitive learning experiences that cultivate genuine curiosity, conceptual understanding, and teacher-empowered classroom software.

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Interactive Classroom Tools

Zero-Install & Fast

Lightweight, browser-native tools and simulations for students and teachers. Crafted for independent practice, conceptual discovery, and collaborative exploration—loading instantly on any device with no student logins required.

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Writing & Ideas

Talks, Essays & Reading

Essays on STEM pedagogy, reflections on artificial intelligence in education, and conference presentations—including The Classroom Genie prepared for the 2026 Pearson Virtual Educator Conference, along with curated readings and notes.

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