Summary Use an open circuit with a bulb to send morse code. Science content Physics: Energy forms, Conservation of Energy (1, 3, 4, 5) Physics: Electricity, Electromagnetism (7) Lessons activity is in Electric circuits Resource Electricity Materials a simple circuit containing a bulb and battery, either made with home made wires, wire cut from holiday lights, or purchased components (see photo). Procedure Students make a circuit containing a bulb and a battery, but keeping it open so that they can turn the light on and off. Give students a morse code sheet (found online), and ask them to pair up to send each other messages with morse code. Try one letter at a time to start before sending a very short message. Discuss the skill required to send and decode morse code fast. Grades taught Gr K Gr 1 Gr 2 Gr 3
