Let's say you're filling in your spare time on the net, but you feel guilty for not studying.
Well, worry not! Cause the internet is full of websites you can go to for educational purposes. If you want something that can test your brain, here are a few websites of Maths Quizzes. They're pretty fun and also beneficial for you! So take a few minutes off Facebook, Twitter, Tumblr as well as 9GAG and have a go at these links! ;)