This report opens with a review of how two structured interview protocols that identify the nature and scope of children's science-related activities outside of school were developed. The interview procedures are known as Community and Home Activities Related To Technology and Science (CHARTS) with the preschool version known as CHARTS/PS and CHARTS/SA for school age children. Foundational research has prompted revision of the preschool version involving questions about a wider range of activities. The purpose of this report is to make the modified preschool version of the interview available to researchers with similar interests. A discussion of the original interview, major modifications made to it, and suggestions on how to modify the procedures for different research purposes are included. Contains 14 references. The survey instrument and the interview are appended. (DDR)