@mukhtarilyas, data is a collection of facts used for the needs of analysts, and scientific presentations. @mathworksheets because of data people can war, can fight, and also can cheat hehe. But the data used for scientific purposes is very useful in this life. I agree once we introduce the data to the child and how to compile it. The steps that have been described above is quite good because the data is pretty much around us. And introduce also valid data. #mukhtarilyas