Developed as a means of integrating mathematics skills and science processes, this booklet focuses on activities dealing with geology, oceanography, and meteorology for students of grades five through eight. Twenty mathematics skills and 11 science processes are listed and indexed for the 18 activities. Each activity consists of student sheets and a teacher's guide. The teacher's guide contains information on the activities including: (1) topic area; (2) introductory statement; (3) math and science skills; (4) required materials; (5) key questions; (6) background information; (7) management details; (8) instructional procedures; (9) student procedures; (10) discussion questions; (11) activity extensions; and (12) curriculum coordinates. (ML)