Seventh graders in Manitoba will gain a better understanding of the highly interdependent and interconnected world in which they live when they complete these supplementary units of study. Units and subtopics are: (1) Planet Earth--how it resembles a spaceship, its relationship to the universe and to the solar system, and how its motions and structure cause it to change; (2) Physical Environment and Its Resources--major landforms and resources; (3) Diversity of Human Life on Earth--racial and cultural patterns, population patterns; (4) Patterns and People Around the World--selected countries from the developed and developing nations; and (5) Ecological System of the Earth--human threats. Each unit subtopic includes objectives, teaching strategies, learning activities, and discussion questions. Activities involve students in reading and discussing textbook selections, preparing bulletin boards, making collages, constructing time lines, viewing films and filmstrips, conducting research, and making oral and written reports. An annotated listing of teacher and student print and nonprint resources for each unit is included. (RM)