A sister and brother pair with immense mathematical reasoning ability is rare. This case study traces the early education of an exceptionally intellectually talented sister und brother who were identified by the Study of Mathematically Precocious Youth (SMPY at the Johns Hopkins University). According to Dr. Julian Stanley, R and M are one of only two such pairs SMPY has identified. In addition, the experiences of the parents with education, both their own and their children's, are examined.
This account is based on interviews with each member of the Z family. In addition, the assistance of Professor Julian Stanley at The Johns Hopkins University is gratefully acknowledged.