A self-paced science notebook
Learn how the world actually works.
Build an atom. Rotate a molecule. Explore the periodic table. A calm, hands-on lab bench for chemistry and physics — running entirely on your machine, one topic at a time.
Interactive, not passive
Every topic has something you can do — sliders, builders, quizzes.
Visual by default
Crisp SVG diagrams and real 3D molecules, not walls of text.
Yours, offline
No accounts, no cloud. Progress is saved in your browser only.
Start with the foundations
All topics →
Foundations What is Science?
How science actually works — observation, hypotheses, and what makes a question testable.
10 min beginner
Chemistry Atoms: The Building Blocks
What atoms are made of, how to read an element, and the difference between atomic number and mass number.
14 min beginner
Chemistry The Periodic Table
How the periodic table is organised — periods, groups, metals and non-metals — and how to read a single cell.
13 min beginner