PHYSICAL SCIENCE-Students explore the changes of matter between solid and liquid and liquid and gas by investigating the changes of state of water as it melts, freezes, condenses, and evaporates. Students recognize that these changes do not occur without the addition or removal of heat. Students become aware that heat transfers from one object to another, and that this conduction can cause a change in material state. Students also become aware that not all forms of matter react the same way to heat or loss of heat. Teams of students use everyday items in simple investigations to construct their understanding that matter can exist in different states.BSCS Science TRACKS includes a Teacher's Edition, complete with facsimile pages of the student guide, placed exactly where you need them with the Teaching Strategies. In addition, the Teacher's Edition incorporates the following features, designed to help you organize and manage an activity-based science program within your busy teaching day. The Program Overview explains: the general philosophy, goals, and features of the program;the relationship of the program to the National Science Education Standards, including the content, teaching, and assessment standards, and Benchmarks for Science Literacy;the curriculum framework (scope and sequence)an instructional model, collaborative learning, communication skills, andclearly articulated assessment strategies;the structure of the student guide and resource book; andthe structure of the Teacher's Edition.