Each group needs:

•  2 thermometers (inexpensive digital kitchen [meat] thermometers may be purchased online- read reviews for accuracy, durability, and waterproof capabilities- or any classroom-safe thermometers may be used.
• 1 stopwatch
• 1 graduated cylinder
• 2 plastic or hot drink cups (small cappuccino cups or paper cups are about the right size. If there's more than 100 ml of water, the temperature will not change as quickly.)
• writing utensils (1 per student)
• Mars Thermos Worksheet (1 per student)

For the entire class to share:

• various insulating materials (bubble wrap, paper, cloth, sand, water, foil, Styrofoam, etc.)
• tape (masking, packing, or duct)
• paper towels (for cleaning up spills)
• pitcher (for ice water)
• ice
• water
• insulated commercial thermos or carafe (for warm water)
• electric tea kettle or hot plate and pot (for heating water)