“book variables, student variables, and school variables.”

“its key components are action and practice, which in turn prompt success, which refuels motivation. Figure”

“Into the Volcano (Wood 2008) holds out the promise of”

“We often speak of creating an environment for reading, a reading climate.”

“Psychological motivation is the desire to change relations between two points, and so psychology is the study of equations with two unbound variables. ("America: Three Audiences")”

“To be is to be the value of a variable.”

“All variables are independent.”