Presents a series of activities intended to enable teachers to determine if children are ready to be introduced to the concept of speed. Reviews Piaget's theories and the empirical evidence on which the sequence is based. (Author/CP)

Discusses a study that examined which reasoning patterns are necessary for success in high school chemistry. Based on student (N=170) scores from the "Classroom Test of Formal Reasoning," it was revealed that students who use formal reasoning patterns are capable of greater achievement in chemistry. (ML)