edX

There are many valuable websites to hone one's critical thinking skills because online education has become increasingly popular, but EdX is arguably one of the best. EdX is an online learning destination founded by Harvard University and MIT in 2012. The platform offers high-quality courses from some of the world's top universities, intending to provide access to education to anyone, anywhere.

EdX offers a variety of courses on critical thinking, including Introduction to Logic and Critical Thinking and Critical Thinking and Problem-Solving. The courses are taught by experts in the field and provide learners with the opportunity to improve their reasoning skills, identify logical fallacies, and evaluate arguments.

EdX commits to providing high-quality education that is accessible to everyone. The platform offers both free and paid courses and learners have the option to audit or enroll in a course certificate program. EdX's courses are designed to be flexible, allowing learners to study at their own pace and on their own schedule.

Website: https://www.edx.org/