(2) Pedometers used in the present KCP application to record children’s EXERCISE were a costly but unnecessary option (at approximately five U.S. dollars per child per month). For example, in other KCP applications, we have used the first 10 min of recess to observe whether or not children were
actively moving, with each observer scanning a section of approximately 25 children, then delivering some type of token reward to them (such as holes punched into their nametags, stickers, and soft rubber bracelets).