Investigating Earth Science Author:McAlpine, Weincek, Jeweler, Finkbinder Each book in series contains 13 mini units. Important background info is presented at the start of each unit to give students an overview of the topic. Next comes interdisciplinary activities in LA, Social Studies, Science, Mat and Art. Students are asked to research an individula or group who made an important contribution in this area of study... more ». Following these activities are four sub topics each with a set of differentiated activities.« less