The elementary students have been studying the layers of the earth, including the barysphere, the lithosphere, the hydrosphere, and the atmosphere. They have learned about the concept, function, and relative size of these layers. In addition, they have worked with science experiments relating to this subject, including this beaker showing the density of liquids, with oil, water, and honey. Another experiment they love is the density of solids, involving a bowl of sand and solids of various densities. They love these lessons and adore the science experiments!