By Julia Vinokur

Education and knowledge is always in demand, whether you work, stay home and answer children’s questions, home school or try to help your kids with a school work.  Here are several online resources that you can use for the educational purposes either for yourself or your children.  You do not need to spend hundreds of dollars, but rather just your time.

Khan Academy

The founder of the organization is Salman Khan.  After earning three degrees from the Massachusetts Institute of Technology (a BS in mathematics, a MS in electrical engineering and computer science, and an MEng in electrical engineering and computer science) he pursued an MBA from Harvard Business School.

In late 2004, Khan began tutoring his cousin Nadia in mathematics using Yahoo!’s Doodle notepad. When other relatives and friends sought similar help, he decided it would be more practical to distribute the tutorials on YouTube. Their popularity there and the testimonials of appreciative students prompted Khan to quit his job in finance as a hedge fund analyst at Connective Capital Management in 2009, and focus on the tutorials full-time.

Courses: History, healthcare, medicine, finance, physics, chemistry, biology, astronomy, cosmology, American civics, art history, economics, music, and computer science.

Coursera

Coursera is an education platform that partners with top universities and organizations worldwide, to offer courses online for anyone to take, for free.  You can choose from hundreds of courses created by the world’s top educational institutions. Courses are open to anyone, and learning is free.

Ted

TED is a platform for ideas worth spreading. Started in 1984 as a conference where technology, entertainment and design converged, TED today shares ideas from a broad spectrum — from science to business to global issues — in more than 100 languages. Meanwhile, independent TEDx events help share ideas in communities around the world.

TED.com is a source of free knowledge from the world’s most inspired thinkers — and a community of curious souls to engage with ideas and each other, both online and at TED and TEDx events around the world, all year long.

University of the People

University of the People (UoPeople) is the world’s first non-profit, tuition-free, accredited, online academic institution dedicated to opening access to higher education globally for all qualified individuals, despite financial, geographic or societal constraints.

With its tuition-free online programs, University of the People is opening access to higher education for all those constrained, as well as building a scalable and replicable model capable of changing the very nature of higher education. The non-profit UoPeople has managed to succeed in cutting down almost the entire cost of higher education, and does not charge for tuition or books/materials. All that is asked is for students to pay a one-time application processing fee ($50) and subsequent modest examination processing fees ($100) levied per course

EDX

One more site with lectures from the top universities in the world. It is very easy to navigate and find a desired course.

Academic Earth

Academic Earth was launched on the premise that everyone deserves access to a world-class education. In 2009, they built the first collection of free online college courses from the world’s top universities. The world of open education has exploded since then, so today curated lists of online courses are hand selected by  staff to show the very best offerings by subject area. There is something for everyone: whether you want to explore a new topic or advance in your current field, they bring the amazing world of academia to you for free.  Harvard, MIT, Princeton, Yale courses.