1. Design a switch for a circuit What are the parts needed to make a circuit?

2. First 2 slides only: http://www.bbc.co.uk/bitesize/ks2/science/ph ysical_processes/electrical_circuits/read/1/http://www.bbc.co.uk/bitesize/ks2/science/ph ysical_processes/electrical_circuits/read/1/ http://www.myschoolhouse.com/courses/O/1/ 68.asphttp://www.myschoolhouse.com/courses/O/1/ 68.asp http://www.bbc.co.uk/bitesize/ks2/science/phy sical_processes/electrical_circuits/play/http://www.bbc.co.uk/bitesize/ks2/science/phy sical_processes/electrical_circuits/play/ Go to next slide to answer BCR question BY YOURSELF on notebook paper.

3. Circuit BCR What do all circuits need to work? In your response be sure to include: Explain the 3 things all circuits require. Tell the job that each item does in the circuit. SAMPLE ANSWER Circuits need a power source, a load or resistor, wire and a switch (optional) to work. The power source supplies the force or energy needed to get the electrons flowing. The load or resistor, such as a light, shows us that the circuit is working. The wire carries the current through the circuit. The switch is used to turn the circuit on & off. (optional) 3 pts. possible

4. You are the Engineers! Instructions: 1. Your group needs to design a system that will turn a light on and off in the hallway of a new office building. 2. Build a working circuit with just a battery, wire and a bulb. 3. Next, add a switch in such a way that the switch turns the bulb on and off. 4. Draw and describe your circuits and switch on notebook paper. 5. Discuss your designs and experiences with the class.

6. 1. Blobz Guide to Electric Circuits: Do sections 3 (Switches) & 5 (Circuit Diagrams) http://www.andythelwell.com/blobz/ 2.