In order to teach your homeschool child details about a subject that you may not be familiar with, you can consult with expert professors from across the world. Massive Online Open Courses are run by a number of websites. Here is a brief run down on some of the more popular websites that offer free educational courses that your homeschool students can take advantage of.

Udacity

At https://www.udacity.com/ the focus is more on computer programming skills. The big guns like Google, Facebook, Amazon, Twitter, Cloudera and more have come together to explain the basics and help self learning students across the globe. The main idea for the website was to be able to provide a place for ongoing education for global citizens regardless of their situations in life.

Coursera

At https://www.coursera.org/ the subjects are wide spread. You can learn about psychology, micro finances, social entrepreneurship and music production to name a few popular courses. You also have the ability to register at specific universities around the world for credits towards your degree. This can come in handy if you are planning to enrol your homeschooling child to a specific university.

Web Adventures 

At http://webadventures.rice.edu/ homeschool students can explore medical mysteries, cool careers in science, do virtual clinical trials, engage in forensic sciences and more. The site offers cool animation based learning that will capture the imagination of most children. You may catch them going back to the site just to play with the data available even when they are not supposed to be studying.

Saylor Academy

At http://www.saylor.org/ you can work towards paid college credits like at Coursera, as well as avail of a large number of courses for free. The subjects include diverse fields such as Art History, Business Administration, Chemistry, Computer Science, Economics, Mathematics, Philosohpy and Physics, just to name a few. Find the course and university that suits your homeschoolers.

Class Central

At https://www.class-central.com/ the courses offered deal with Health and Medicine, Engineering, Humanities, Art and Design and a whole lot more. The courses are short term and usually last about a month or two, making it ideal to include in homeschooling subjects.