Each group needs:

• 1 breadboard (EXP 350 recommended, from online vendors; or find used breadboards)
• 1(or more) LM35 temperature sensor chip (online from www.digikey.com; get extras in case students accidentally break one by setting up the circuit incorrectly.)
• 1 LM324AN operational amplifier integrated circuit 
• 1 9-volt battery with battery connectors (or have a few for the class to share)
• 1 9-volt battery holder (optional, or have a few for the class to share)
• Ice
• Ziploc bag
• Thermostat Worksheet
• Breadboard and Circuit Diagram Basics Handout

For the entire class to share:

• 1 jumper wire kit, or each group needs 2 pieces of 1-inch wire, 2 pieces of 3-inch wire, and 5 pieces of 2-inch wire and electrical tape
• Small wire strippers (only needed if you are using insulated wire and not the jumper wire kit, to remove insulation at wire ends)
• Multiple ¼ watt resistors of various sizes from 500 Ohm up to 10K Ohm 
• A few multimeters to make various measurements (such as Kelvin 50LE http://www.kelvin.com/ part # 990177)

Materials note: The breadboards, wires, wire strippers, resistors and multimeters can be re-used.