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Students observe a rock, water, and air in plastic bags to help them write an operational definition of a solid, a liquid, and a gas. Materials list, advance preparation instructions, lab hints and tips, rubric, worksheets, and answer key are provided.
Scott Foresman, an imprint of Pearson
Provided by Scott Foresman, an imprint of Pearson, the world's leading elementary educational publisher. Its line of educational resources supports teachers and helps schools and districts meet demands for adequate yearly progress and reporting.