The project represents the efforts of Highline Public School s during 1967-68 to develop an integrated curriculum in mathematics and science for the primary grades. This project prepared teachers to develop scientific attitudes and student understanding of mathematical and scientific concepts. The curriculum was based upon an inquiry system utilizing eight concepts and seven processes which served to unify mathematics and science. The authors discovered that significant student learning occurred and both students and teachers exhibited greater interest in and enthusiasm for mathematics and science. (RR)