For demonstration purposes:

• examples of different types of packaging; include both environmentally conscious packaging and excessively wasteful packaging
• examples of polystyrene containers/food trays

Each group need:

• 1 single-serving drink box, cut in half
• 1 large plastic beaker, or a similar container such as a bowl or a 2-liter plastic bottle with the top cut off
• masking tape, 6" strip
• 2 cups of water or, depending on the container, enough for each group to submerse half of a juice box
• graph paper, one sheet per person
• 12" ruler
• variety of colored pencils/markers/crayons
• (optional) calculator (groups may share)
• It Doesn't Add Up Worksheet, one per person