Книга: Planet Earth, Grades 4-6

These resource books provide the busy teacher with science lessons that are appropriate and doable. Step-by-step lessons alignedwith National Science Education Standards, make science relevant to real life. There are hands-on activities with student record sheets. Planet Earth presents information and investigations on these seven concepts: Earth is composed of rocks, water, and gases. The core, mantle, and crust make up the layers of the Earth. Earth's curst contains continents and oceans. Constructive forces affect landforms. Destructive forces affect landforms. Soil is made up of a variety of components.