This study investigated the effects of the addition of a supplemental science program to existing curricula in selected elementary schools. A supplemental science program, the Elementary Science Study (ESS), was introduced to the treatment group (four of eight classes randomly selected, with a total population of 189 sixth-grade students) and a…

Nuffield Secondary Science is a set of tested materials from which teachers can prepare courses for students in grades 9-11 (approximately) who do not intend to major in science. The materials are designed for British secondary schools, and the examples are often British, although many of the suggested activities are adaptable to other countries.…