Products

All of Selvasis, in one place

Science without jargon, checked by hand, in whatever format you like best: to read, to explore for free, or to play.

To read

All 5 ebooks —mathematics, physics, biology, astronomy and chemistry— without jargon and checked by hand. PDF + EPUB.

A Wonder of the Day and a growing archive of astonishing, true facts to explore out of pure curiosity.

The games are still in Spanish — but a word search does not need much translating.

30 word searches with the vocabulary of the cosmos. Find the words and unlock an astonishing fact in each one.

Three sample sudokus — easy, medium and hard. A unique solution and, once solved, an astonishing number from science.

Two sample crosswords — the atom and water. The words cross and help each other, and reveal a fact once solved.

Three sample mazes. One single path to the exit and, when you get there, a wonder of the universe.

Three science sheets to color online — solar system, Fibonacci sunflower, cell. Pick a color and paint.

Soon

Science word searches and sudokus as premium print-ready PDFs, with solutions and facts. Crosswords, mazes and coloring sheets on the way.

Coming soon

News, launches and one wonder in your inbox. No spam, no noise.

Free. Leave whenever you like. Every fact checked by hand. · Privacy notice