Each book in this complete curriculum series, contains everything you need for 24 lessons! Co-authored by Dinah Zike and Susan Simpson, the books include reproducible masters for student-made Lots of Science Library Books for each lesson, assignments, concept maps, vocabulary words, and enrichment activities. Complete and clear directions are provided, along with materials lists, questions to ask, and data for students to record. Dinah"s 3D graphic organizers help students organize information and increase understanding and retention by simplifying complicated material. For lab activities, our exclusive Investigative Loop process helps students get the most from their experience by encouraging students to apply what they have learned and formulate new questions. With icons indicating different mastery levels, the series utilizes a multi-level system appropriate for levels K-8.