UKS2- Catch the Sandwich Thief!

Someone has been stealing sandwiches from the staff room fridge! Could UKS2 create a switch system to sound the alarm when the thief was out in action.

They used there knowledge of switches, conductors, and circuits to design and make contraptions to catch the criminal in the act!

Using a peg with foil as a conductor. When the sandwich is removed, the foil touches and a buzzer sounds.
Using a lever system. When the sandwich is pulled out the fridge, it moves the metal into the circuit and the alarm sounds.

Leave a Reply