A study was conducted to examine the impact of a non-sex-biased, self-instructional module on preservice home economics teachers' attitudes toward teaching nutrition to adolescent males and females and to gain knowledge of students' nutritional needs. Sixty-two participants from three institutions in Pennsylvania offering undergraduate programs in home economics education were sent a self-instructional module on adolescent nutrition, the nutrition module pre- and posttests, and an evaluation form, all developed by the researcher. The sample for the study consisted of the 31 preservice home economics teachers who returned the instruments by the deadline. Demographic variables, attitudes, knowledge, and personal evaluation of the module were collected from the evaluation form. The data from the study indicate that preservice home economics teachers had significantly different attitudes toward teaching adolescent males and females about nutrition and toward general concepts related to the teaching of nutrition to adolescents after completing the module. Preservice home economics teachers also differed significantly in their knowledge of the nutritional needs of adolescent males and females after completing the module. Preservice home economics teachers had more positive attitudes toward teaching nutrition to adolescent males and females and toward general concepts related to the teaching of nutrition to adolescents after completing the module. (Author/KC)