This page groups together a selection of interesting sites, most of which are related to mathematics and sciences.
The best mathematics websites
https://www.calculator.net
Solumaths, online formal calculation site, symbolic calculation, online calculator.https://www.solumaths.com/en/calculator/calculate/calculator
Solumaths, online mathematical exercises for middle and high school, tutorial for math tutoring.https://www.solumaths.com/en/math-exercises/middle-and-high-school
Solumaths, online mathematical graphing site, online grapher.https://www.solumaths.com/en/graphing-calculator/free-graphing-calculator-online-plotter-curve
Solumaths, site de jeux de calcul mental en ligne, jeux de reflexion basés sur les nombres.https://www.solumaths.com/en/math-games-online/educational-games-algebraic-calculation
Desmos - Interactive tool for graphing and using advanced calculators.https://www.desmos.com
Omni Calculator - Provides a wide range of calculators for different mathematical disciplines.https://www.omnicalculator.com
Overleaf - Online collaborative LaTeX editor used for creating mathematical documents.https://www.overleaf.com
CalculatorSoup - Free online calculators for a variety of mathematical calculations.https://www.calculatorsoup.com
Khan Academy - Free educational platform offering courses in mathematics and other subjects.https://www.khanacademy.org