Authors Dr. Deborah Muscella is project director of Infusing Statistics into Elementary Mathematics Teaching. Dr. Katherine Paget is evaluation coordinator of the NGS Kids Network Middle Grades project. Evelyn Gibbel, a primary school teacher, contributed significantly to the Infusing Statistics project and the resulting written material. The Used Number curriculum units are available from Dale Seymour Publications, P.O. Box 10888, Palo Alto, CA 94303. The Sink or Float unit is available from Delta Education, Inc., P.O. Box M, Nashua, NH 03061-6012.
Copies are available from the authors.