The Standard Celeration Chart was invented as a multi-purpose tool by Ogden Lindsley.We use it primarily for tracking progress in one minute timings.

Lindsley, O. R., (1971) From Skinner to Precision Teaching: The Child Knows Best. in Jordan and Robbins, Let's Try Doing Something Else Kind of Thing. Council for Exceptional Children, Arlingtan VA.

Lindsley, O.R. (1991) Precision teaching's unique legacy from B.F. Skinner. Journal of Behavioral Education 1 (2) 253-266.

Lindsley, O.R. (1992) Precision teaching: discoveries and effects. Journal of Applied Behavior Analysis, 25, 51-57