Each student needs:

• Law of Cooling Worksheet

To share with the entire class:

• 100 ml beaker
• large heat-proof bowl, at least 6 cm deep
• BASIC Stamp activity kit - Serial + USB (Text v.3.0) (includes the HomeWork Board with a built-in BASIC Stamp 2 microcontroller, LEDs, wires, resistors, capacitors, and USB cable; item code 90005 for $40, available at parallax.com) Alternatively, instead of the BASIC Stamp 2 microcontroller and associated probe and circuitry, use an analog [mercury or other] thermometer.
• Parallax AD592 temperature probe (available at parallax.com; part #28130 for $16)
• 100 Ω resistor (available at radioshack.com; part #271-1311 for $1.19 for five resistors)
• 0.22 μF capacitor (available at digikey.com; part #445-4730-ND for $0.29)
• laptop computer with PBasic software to interface with BASIC Stamp via USB cable (obtain free download of software at https://www.parallax.com/microcontrollers/basic-stamp)
• thermometer, a known one that accurately measures room temperature, for probe calibration
• hot water, tepid water and ice water, ~1 liter each
• Thermometer Program (bs2)
• (optional) projector, to display the temperature probe readings