May 4, 2017 You need: Clean paper / pencil Warm Up: Mental Math quiz – be ready! I CAN: define electricity and at least one type of circuit

CircuitS Let it flow…

Let’s act it out! Make a circle/loop = CIRCUIT Meet Ms.Garris’s pet chick, Albert. Can you make him chirp? How? Can you add others to your group? I used a little toy chick that my kids had gotten at Easter. You can use an energy ball instead! Just be careful – they are too expensive for the kids to play with so keep them supervised!

Electricity It is the flow of the ELECTRONS that we call electricity. An electron is one of the tiny particles within an atom. An atom is the smallest thing that is still recognized as a basic element (not just a part or piece of something larger). Nucleus = protons (+) AND neutrons (no charge/ neutral!) Electrons = negatively charged particles

Key Vocabulary Electricity: A source of power generated from the flow of electrical current. Electron: A small, atomic particle with a negative charge. Energy: The ability to do work.

Key Vocabulary Circuit : A path through which electrical current can flow. Circuit Diagram : An illustrative picture used to explain the paths through which electricity can flow. Conductor: A material that allows for electrical current to flow. Current: The flow of electrons through a conductor.

Circuit Not so simple Not so simple

Electrical shorthand We have created a “short-hand” or a way to draw out circuits using symbols. Bulb/lamp/light – can be used as an indicator to simply show there is electrical flow OR may be the main purpose for the circuit Bulb

Electrical shorthand Wire/wiring – the connection between parts, allows for flow (and extension over distances), must be a CONDUCTOR, typically is covered with INSULATION to protect those who may come in contact.

Negative Positive Electrical shorthand Battery Power source - in simple circuits that power source is most likely a battery. Battery Negative Positive

Electrical shorthand Switch - closed (allows flow) Switch - open (stops flow)

Electrical shorthand Motor Buzzer Sometimes you may want to add in a motor or a buzzer (sound maker)… Motor Buzzer

Draw out a simple circuit Draw out a simple circuit. **Remember that it will need to connect the light source (bulb) and the energy source (battery). Remember to create a small hole for a light bulb to stick THROUGH the card. It should be worked into the circuit AND the card design. TAPE the copper tape down as the wire for your circuit. Be careful to press so that it sticks. Corners are tricky. The battery will need to be in a corner – with ONE copper strip leading to it, but the other NOT touching. You will then fold in the corner to put the battery into the circuit (so it will be the energy source AND the switch to open/close the circuit). Secure the battery (button or coin batteries work best for fit). Fold over the corner so the battery will connect with BOTH wire leads (and not just one). Valley fold

Check your notes… Electricity – Circuits Bulb (lamp/light) – picture, direction of flow. Wiring – connects all parts of the circuit Batter (power source) – direction of flow Switch – open (stops flow), closed (allows flow) Motor – create motion (kinetic) Buzzer – indicate with sound.

Draw out a simple circuit Draw out a simple circuit. **Remember that it will need to connect the light source (bulb) and the energy source (battery). Remember to create a small hole for a light bulb to stick THROUGH the card. It should be worked into the circuit AND the card design. TAPE the copper tape down as the wire for your circuit. Be careful to press so that it sticks. Corners are tricky. The battery will need to be in a corner – with ONE copper strip leading to it, but the other NOT touching. You will then fold in the corner to put the battery into the circuit (so it will be the energy source AND the switch to open/close the circuit). Secure the battery (button or coin batteries work best for fit). Fold over the corner so the battery will connect with BOTH wire leads (and not just one). Valley fold

Let’s build! – Light up card Come up with a design…that uses a light! Draw your design on the front of the card. Make a SMALL hole for the light bulb…SMALL. Draw out your circuit on the back – connect the lightbulb to the lower corner where you will put the battery. Use the copper tape to connect the battery to the bulb. You will need to secure the battery – with electrical tape.

Clean up! Your “creation” should be drawn on your paper – so you aren’t losing the info/design. All supplies OFF of the “circuit board” Wires / bulbs should be separated (not wound together) Wires / bulbs go back into the cup Tape should be put around the outside of the cup

Let discuss Share what you built What would happen if the battery were turned around in the circuit? Which would be brighter…light bulbs in series or light bulbs in parallel? Why? Briefly describe the differences between a parallel and a series circuit.