This environmental unit is one of a series designed for integration within an existing curriculum. The unit is self-contained and requires minimal teacher preparation. The philosophy behind the series is based on an experience-oriented process that encourages self-paced independent student work. In this unit, students study the physical properties of snow and ice in relation to water, heat, the environment, and themselves. It is a goal of this unit that, by learning more about the behavior of water and its environmental influences, the students will become involved enough to recognize water as a vital source of life and want to protect it. Activities, designed for the elementary grades, are generally done outside. Students observe snowflakes, make cross-sections of snow banks, study snow density and make snow paintings. Besides these, there are numerous other snow activities that guide students to the goal of this unit. Each includes a list of materials, background information, and directions for the teacher. (MA)