The idea is to get appropriate technology into the hands of children. If you are asking at what age a child should have access to a computer on a full-time basis, I think all children from the fifth grade onwards should have their own portable computers. Software support for classroom education continues to improve each day and that is another factor to consider when you talking about integrating technology into the curriculum. It takes away valuable space in already overcrowded classrooms and does nothing to integrate computers into the curriculum. The third level is about composition - the ability to organize materials for a presentation.
Basic literacy is important at the elementary level.
Learning occurs primarily in a classroom with a single teacher. Teachers need the ability to present materials to the whole class and to individuals via a computer network. Middle and high school students require all three levels of competency, and should have access to a computer for about 1- hours a day. Classrooms surround the computer commons. Glass in the classroom walls allows teachers to keep an eye on the commons area.