Each group needs:

• calculator
• thermometer
• 200 ml water
• Thermodynamics Worksheet, one per student

To share with the entire class:

• beaker tongs or hot gloves
• burner or hotplate
• 500-ml beaker
• 100-ml graduated cylinder
• assorted thermos construction materials (such as water, foil, cotton balls, paper cup, plastic cup, Styrofoam cup, sand, paint, foam insulation, masking tape, as listed on the worksheet)
• store-bought thermos, old or new, one or more different designs, to provide comparative testing data (make note of purchase price)