Most effective tools for educating different age groups

In the growing age of technology and development, the need for an effective tool for education system also increases.  In the present day situation where children are seen with smartphones and other expensive contrivances, it is quite obvious that the present generation is quickly adapting to the modern gadgets. We have often  noticed that whether it is the young generation or the older one, visuals make a huge impact on them. Other than the written material in the text books, if the information is presented on the screen with an illustrative explanation, anyone watching it will be able to comprehend the concept better.  Also anything that is colourful and illustrated attracts more attention than just audio or even a plain monochrome picture. However, for about four years now the smart classroom method is being used in different schools and colleges of India. Many colleges also use PowerPoint presentations as an effective method of teaching. These are all very efficacious in providing education to different age groups in a short period of time.