How to build your own operation
game…
Materials:
Wire and wire strippers
Box
Metal Tweezers
LED light
2 AA Batteries and a holder
Drinking Straws
Tin foil
Circuits
• Electricity travels in a circuit. A circuit is a route
around which an electrical current can flow,
beginning and ending at the same point.
 A circuit requires at least two wires to handle the flow
of the current.
1. One wire (known as “hot”) carries the current from
the source to where it is used.
2. The other wire (neutral) carries the current back.
3. Most electrical circuits also have a third wire called a
ground wire.
Types of Circuits
• An open circuit is a circuit that
has been disconnected by a
switch or another open in the
line.
•
A closed circuit is a circuit that is
continuously providing a
complete path for the flow of
electricity.
• A conductor is a
material that allows
electricity to easily pass
along it or through it.
– Copper, aluminum or
water are good
conductors
• An insulator is a
material that prevents
or reduces the passage
of electricity.
– Rubber, porcelain, and
glass are all good
electrical insulators
• QUIZ TOMORROW!
– Cost calculations
– Ways electricity is produced
– Circuit info
– Electrical vocublary
Now to the game building…
Here is what your circuit should look
like: