Students investigate physical changes in size, shape and states of matter to determine whether they produce new substances. Materials are provided with four activities in which students learn to (1)identify examples of phase changes, (2) investigate examples of things that happen to matter they absorb or lose heat and (3) explore changing the sizes and shapes of substances. Includes reproducible student data sheets and assessment questions. Required, but not included: microwave, clock. Designed for 24 students working in six groups of four. Grades K-4
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