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Now we are learning electricity basic as our science topic. There are plenty of experiments we can do using this topic. One rich variable of experiments are about circuit.

Materials:

Mini lightbulbs (the more numbers will be better)
Battery (2 @1.5V big size will do)
Wire

Tool:

Cutter
Card to cover and to assemble the battery (optional)

Procedure:
1. Explain about series and parallel circuits
2. Cut the wire into approximately 20cm with the end of each peeled.
3. Plan what kind of circuit will be assembled and write it on a piece of paper. Using colourful pen will be nice.

4. Hook the lightbulb (left and right) with the core of the end of the wire. To make series circuit, just assemble the wires and lightbulbs into one line. The end of the line should be connected to the battery line.

5. To make parallel circuit, just assemble the lightbulbs, battery and wires like this:

Kids made series of 1, 2, 3, and 4-lightbulb series circuits and 3-lightbulb parallel circuits.

One lightbulb series circuit

4-lightbulbs series circuit

They did it cooperatively

When they have finished those circuits, they came up with a conclusion:

1. The more lightbulb they added to the circuit, the dimmer the light would be.
2. When they took out one lightbulb in a series circuit, all the other lightbulbs would turn off. However, when they took out one lightbulb in a parallel circuit, the other lightbulbs would not turn off.
3. There wasn't electricity current when they put together the positive and positive end of the battery together.
4. They would get electric shock when their hand was wet.

We are planning to join our homeschool community, Klub Sinau, to learn more about the electricity circuits. We are still curious how to combine the series and parallel circuits altogether.

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