The recent introduction of statistics into the Brazilian curriculum has presented a multi-problematic situation for teacher professional development. Drawing on research in the areas of teacher development and statistical inquiry, we propose a Teacher Professional Development Cycle (TPDC) model. This paper focuses on two teachers who planned a…

Discusses students' preconceptions of randomness and offers an alternative way to think about the concept using the idea of complexity. That is, the randomness of a sequence can be measured by the difficulty of encoding it. Methods of judging complexity and implications for teaching are discussed. (Contains 30 references.) (MKR)

Discusses guidelines for fairness in employee selection required by the Federal Uniform Guidelines on Employee Selection Procedures, and presents a simplified procedure for the evaluation of fairness which is more easily explained than the classical Cleary model. (JAC)

Research on the usefulness of metaphors as an aid to teaching statistics shows that students taught with metaphors learned more, defined terms more accurately, made more successful inferences, and made fewer errors. (CH)