The arrival of internet has brought about significant changes in the way we work and live. That includes the way we teach and study. Classrooms today aren’t just about teachers writing on blackboards and students scribbling on paper. There are projectors, digital pens, laptops..and of course the internet, which is responsible for all these changes. Since the internet is now an integral part of teachers’ lives, it’s important that they are aware of the tools and resources available online that could help them impart education in an effective and efficient manner. The following lists mentions 20 such tools. If you are a teacher or an academician, do check them out.