Two forms of a survey instrument were developed, "Mathematics as a Gendered Domain" and "Who and Mathematics." Both versions were intended to measure the extent to which students stereotype mathematics as a gendered domain. The Mathematics as a Gendered Domain score used a traditional Likert-type scoring format, but an innovative response format was adopted for the Who and Mathematics version in which students had to select responses related to the difference between boys and girls. In developing the initial items, previous research, feedback from 10 educators, and responses from about 24 junior high school and high school students were used. In the first trial, approximately 400 Australian secondary school students completed the questionnaires. Items were deleted to revise the forms for a second trial administered to approximately 1,600 students from 8 Australian schools. The focus of the report is on the second trial of the Mathematics as a Gendered Domain scale. The significant correlation between two of the subscales is consistent with beliefs that mathematics is either a neutral domain or a male domain. Additional studies with the same instruments will investigate the mathematics stereotypes further. (Contains 2 figures, 3 tables, and 12 references.) (SLD)