All Bottled up: The Perfect Ecosystem

16 oz to 20 oz plastic bottles—one for each group. Ice. Buckets or dish pans—one for each group. Thermometers or temperature probes. Timers. Variety of materials to be used for insulating the bottle (e.g., Styrofoam, cloth, cardboard, cotton balls, straws, bubble wrap, aluminum foil) Plastic wrap. Masking or packing tape ................
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