10 principais openstax.org concorrentes

khanacademy.org

Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.

libretexts.org

libretexts is an ecosystem of connected tools that empower educators to create open educational resources at scale.

desmos.com

desmos offers best-in-class calculators, digital math activities, and curriculum to help every student love math and love learning math.

webassign.net

webassign is an online learning platform built by educators that provides affordable tools to empower confident students in a virtual learning environment.

mcgraw-hill.com

find the path to what's possible. every teaching and learning journey is unique, and we'll help guide your way. find out more.

chem.libretexts.org

The LibreTexts libraries collectively are a multi-institutional collaborative venture to develop the next generation of open-access texts to improve postsecondary education.

tutorial.math.lamar.edu

welcome to my math notes site. contained in this site are the notes (free and downloadable) that i use to teach algebra, calculus (i, ii and iii) as well as differential equations at lamar university. the notes contain the usual topics that are taught in those courses as well as a few extra topics that i decided to include just because i wanted to. there are also a set of practice problems, with full solutions, to all of the classes except differential equations. in addition there is also a selection of cheat sheets available for download.

open.umn.edu

Natural Sciences - Chemistry