Home / Learn

Learn

Learn by doing. Interactive tools, experiments, short courses and language practice for school students in Class 8 to 12. Free, with no sign-up, and nothing about you is saved.

Class 8 to 12 Coming soon

Interactive tools for science and maths, chapter by chapter, so you can change a number and see what happens.

Open →

Experiments Coming soon

Virtual lab work: set up an experiment, take readings, plot them and check the result, on a phone or computer.

Open →

Courses Coming soon

Short free courses on new and advanced topics, written for young learners, with something to try in every lesson.

Open →

Languages Coming soon

Tools to learn and practise languages: letters and scripts, words, listening and speaking.

Open →

Tools you can use today

Equation balancer #79 Balance any chemical equation, including ionic and redox ones, check the atoms on both sides, then find the limiting reagent, the theoretical yield, what is left over and your percent yield. Molar mass calculator #78 Type any formula, including brackets, hydrates, isotope labels and charges, for its molar mass, exact mass, percentage of each element, and a grams, moles and particles converter. Gas law calculator #83 Work out pressure, volume, amount or temperature of a gas in any units, with the mass and density of a named gas, the van der Waals real-gas answer and how far the ideal gas law is off. Water wave calculator #139 From a wave's period, height and the water depth, get the wavelength (solving the dispersion relation exactly), phase and group speed, energy and power, orbital velocity at the bed, then follow the wave into shallow water with shoaling and refraction to find where and how high it breaks, and the breaker type. Sky tonight #13 For your place and date: sunset, when it gets properly dark, the Moon's phase and rise and set times, where each planet is, and the best galaxies, clusters and nebulae for your eyes, binoculars or telescope. Publication plot maker #27 Paste columns or open a CSV or Excel file and get a clean scientific figure with error bars, sized for a journal column. Download vector SVG or PDF, or PNG at 300 or 600 dpi. Your data stays in your browser.

Later, Learn will also have lessons, chapters and material for university students (graduate and master's level).

Learn follows the topics of the NCERT books used for Class 8 to 12 in India, so students can practise what they study at school. fibub is an independent free site, not part of NCERT, and it doesn't copy textbook text or pictures. Like every fibub tool, everything runs in your browser: no sign-up, nothing about you is saved.