Abstract
The Digital Native Generation consists of those who were born and grown up,being surrounded by the Internet and personal computers,and who feel naturally living with them,use them without any hesitation. They show specific differences from their former generation and it is important to provide them with instructions of a new type when they are involved in educational systems. We focused on the features of them while doing tasks at university,searching information on the web with an explicit instruction to use the Internet and we investigated the changes of the volume and variety of their vocabulary as part of their knowledge before and after the tasks. We had two classes to make researches on; CLASS W was given an instruction to search on the web and CLASS L was given an instruction to search books in the library. These instructions were explicitly told every time during the whole course from April to December in 2012. The results showed that those two classes had had different features about their ‘Word association' task (the average mark: CLASS W-pre 6.9,post 13.2; CLASS L-pre 5.8,post 9.7).