As we know that earth is the home of all the living entity. But we less aware about how the earth is composed of ? This unit will explain all about the composition of earth. Hope students of grades 3rd to 9th will learn a lot. Your students will love this engaging lesson about the composition of earth and various layers/chemical part of a it! This unit in the form of PDF file includes engaging, colourful, informative, visually stimulating and eye-catching photos and diagrams as per the topic need which rarely fails to stimulate a lively class discussion.The unit includes total EIGHT different worksheets at the end. Download the preview for a FREEBIE. The following topics are covered with this unit.Introduction 1.Crust TWO TYPES OF CRUST 2. Mantle –The sub-layers of the mantle 3.CORE –Outer Core –Inner Core4. 8-Worksheets.You will find lots more in my store, including math, science, ELA, activities/craftivities, special education, interactive activities, and more!