TECH: primary students at computer screens

[Marcia Dressel <dressel@OSCEOLA.K12.WI.US>]

Can anyone direct me to research-based information regarding students using
computers?

Especially ----students in K-2nd grade.
        ---- appropriate length of time for their eyes to focused on the screen
        ---- distance from the screen
        ---- ergonomically safe seating situations, etc.

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