The Zimbabwe Secondary School Science Project (ZIM-SCI) developed student study guides, corresponding teaching guides, and science kits for a low-cost science course which could be taught during the first 2 years of secondary school without the aid of qualified teachers and conventional laboratories. This teaching guide, designed to be read in conjunction with the related student guide, includes instructional strategies, lists of required materials, laboratory procedures, and other information for activities and experiments in a unit in which students: (1) identify plant sex cells and sex organs; (2) study the mechanisms of pollination and fertilization; (3) investigate the development and dispersal of seeds and fruits; and (4) observe the life cycles in some plants and animals. Because the development of concepts in this unit has been carefully designed, it is essential that all experiments, activities, and discussions be done in the exact order throughout the unit. Each section in this guide corresponds to a given section in the student study guide. (JN)