Students explore water, the most abundant substance on Earth, using many tools and techniques, so be prepared for splashes and spills. After using their senses to determine some of water's properties, students pour, mix, filter, and freeze water. They watch water climb, bubble, condense, and take different shapes. They learn how to use pipets and wire wands, vials, and funnels, becoming familiar with scientific procedures and equipment. Experimental setups and trials help your water detectives operationally define such scientific vocabulary as sink, float, dissolve, and evaporate. They also compare water to other liquids and experiment with filtering muddy water.
In the Delta Science Reader Investigating Water, students read about the properties of water. They learn that water can exist as a solid, a liquid, or a gas and find out how water changes from one state to another. They observe that objects either sink or float in water and that some substances dissolve in water. They also read about scientists who study glaciers in Antarctica. Finally, students discuss the importance of water to living things and ways to conserve water.