Learning to work with bivariate data, a key goal of middle-grades statistics curricula, is aided by a sequence of lessons.
Randall E. Groth, firstname.lastname@example.org, teaches mathematics education courses at Salisbury University in Salisbury, Maryland. He is interested in designing ways to help develop students' statistical thinking.
Mary Knaub, email@example.com, were selected to be participants in a National Science Foundation (NSF) Research Experiences for Undergraduates (REU) project at Salisbury University. They collaborated on the design and implementation of the study reported in this article.