Question: How can I make online learning more accessible and affordable for students around the world?

Khan Academy is a free, nonprofit online learning platform that offers a wealth of materials covering everything from math and science to language arts and more. It's designed to be personalized so students learn at their own pace, which is why it's good for students and teachers. Khan Academy has a good reputation, with 90% of US teachers who've used it saying they trust it.

Another option is Study.com. The platform offers flexible, engaging and relatively inexpensive courses, test prep and other learning materials for students of all ages. It offers access to more than 220 transferable college credit courses, test prep for more than 1,500 tests, and help with more than 2.8 million homework questions. Study.com offers various pricing tiers, so it's good for a broad range of students.

For students who want a one-stop option, StudyX offers an all-purpose AI learning assistant. It offers homework help, deep learning using AI models, paper research help and easy AI writing. StudyX is available as browser extensions and offers various pricing tiers depending on how much access and help you need. It's designed for students at any institution and has been used by more than 450,000 students at more than 1,200 institutions so far.

Last, Quizlet is an all-purpose learning platform that uses AI to help students study and learn subjects. It offers a range of tools, including Magic Notes, Q-Chat, Expert Solutions and Spaced Repetition, among others. Quizlet applies learning science techniques to its tools to try to make them as effective as possible, which is why it's a good option for students. It offers free study sets and modes, but you can upgrade to Quizlet Plus for more features.