Olivia McKown, 12, carries Sadie Noreen, 8, after they unveiled a giant switch at Science Museum Oklahoma during a program to announce plans to create a 21,000-square-foot exhibit focusing on children ages 3 to 6 with funding from a $12 million grant from the Donald W. Reynolds Foundation in Oklahoma City, Tuesday January 22, 2013. Photo By Steve Gooch, The Oklahoman