Squishy Circuits

TAG students are making conductive dough.

Hypothesis: I think electricity will go through the conductive dough.

We are following the reciepe.


  • 1. Get two bowls, salt, lemon juice, water, flour, oil, and food coloring. Follow recipe on the box.
  • 2. Wait a day to see if the dough would harden because it was too runny.
  • 3. It didn’t harden so we added more flour and salt. It might not be conductive because we didn’t follow the recipe correctly by cooking it.
  • 4. Tested the dough by putting the buzzer in the dough and connecting the battery pack. It buzzed
  • 5. We tested the LED to see if it worked. It did.
  • 6. We tested it again on another day and it did not work.  
  • 7. We re-made the dough following the directions better and it worked every time!


  • Using the Internet, we learned about circuits, batteries, wires, LEDs, buzzers, and motors. We learned how to make a circuit and learned what conductive and insulating meant. We tested things to see if they were conductive. We found out metal things were conductive.
  • We read that electricity travels the shortest path. We changed our design so that the electricity had to flow through the dough. We used the Internet to find out why our dough was conductive. We discovered the salt is conductive because it has ions and ions are conductive. We predicted that metal must have ions.  After interviewing an electrical engineer, we learned electrons or ions conduct electricity.

Conclusion: We discovered that if things have ions and electrons then it is conductive.  If it doesn't, then it is insulating.

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