The sixth grade created Halloween cards as part of a unit on circuitry. The students learned about how to make open, closed, series and parallel circuits; using single and multiple LEDs, and troubleshooting their circuits. Every card was different, highlighting their creativity in design and circuitry. Of course, nothing goes right the first (or second, or third) time but the students persisted until things worked out. Sometimes they had to change the initial plan to make things work.