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 ZIM-SCI study guide is a three-part unit consisting of activities, experiments, and readings on: (1) plant and animal cells; (2) growth and reproduction; and (3) human reproduction. Experiments provided include examining plant and animal cells, preparing models of these cells, and dissecting a rat. Information is also provided throughout the unit to help students understand the scientific principles behind the activities and experiments. Because students may come from traditional homes where various topics in this unit are not discussed (such as human reproduction and family planning), it is suggested that sections containing these topics may be read silently. (JN)