Cardboard Electric Circuits

This project helps you understand the difference between a series circuit and a parallel circuit. Often, when we're in a class or at a science show, the components are small and hard to see. So let's create our components out of cardboard and on a scale that's easy to see from a distance and by many people at the same time.

• Cardboard
• Cardboard Box
• Ducktape
• 9V battery
• Tape
• Scissors
• Ruler
• Pencil
• Copper adhesive tape
• Straws
• Double sided tape
• Light bulb
• Light bulb support
• Ballons
• Cellophane paper
• Crocodile cables

1. We need to close our cardboard box. And then with duck tape we decorate the box with 2 tones. At the bottom of the box we create an opening that allows us to access the interior and at the top we make 2 small holes where we will then introduce the electrodes.
2. Let's now identify the positive and negative poles with the plus and minus signs and with different colors.
3. To build the electrodes we will create 2 strips of cardboard and use two straws. After cutting, cover everything with adhesive copper tape.

4. Now we connect the battery holder terminals to the cables and the cables to the electrodes built earlier.

1. We can use one of the tapes as a measurement for our lamp. Cut a strip of cardboard to wrap the ribbon.
2. Close the cylinder with tape.
3. Blow up a balloon so we have the rounded part of the bulb - in the end we can pop the same one, it's always fun!
4. Cut 2 strips of cardboard and wrap the balloon and glue it to the cylinder.
5. Wrap with cellophane and then use duck tape to give the final decoration.
6. Now you can pop the balloon.
7. For the base where the electrical part of the lamp will be, we cut 2 circles, once again a roll of tape can serve as a measure.
8. To build the electrodes, we cut 2 strips of cardboard and wrapped them with copper tape. Then, with double-sided adhesive tape, we glue each electrode to one end of the base.
9. We now place double-sided tape in the center and glue the lamp holder. The two wires must be connected to the electrodes at the base using copper adhesive tape.

• Cut out a square of card.
• Make the two tabs so that one fits into the other.
• Cover with adhesive copper tape.
• Cover with duck tape for a more professional look.