Build a return path
A working circuit needs a conducting path from one battery terminal back to the other.
Circuit Playground
Connect wires, a battery, a switch, and a bulb to build a complete electrical loop.
Grades 3–5 · Physics
Your goal
Connect all four wires and close the switch to light the lamp.
Reduced motion is on. The controls still update the scene.
The lamp is off. Missing wires 1, 2, 3, 4. The open switch breaks the path.
A single battery and lamp with ideal conducting wires. We check each connection in the loop. This model does not calculate current, battery drain, resistance or brightness.
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Learn with Circuit Playground
Circuit Playground introduces simple electrical circuits through a battery, wires, a switch, and a lamp. Students connect sections of wire and open or close the switch to investigate when the bulb lights. A working circuit needs a complete conducting path between the battery's terminals, including a return route. Elementary learners can predict the effect of a missing connection, test their circuit, and explain why opening one part of a simple loop prevents the lamp from working.
What to look for
Open the switch
An open switch breaks the path. A closed switch can complete it.
Check every connection
A disconnected wire can stop the whole simple loop from working.
For teachers and curious learners
Understand why a bulb needs a complete conducting path. Ask students to predict what will happen, change one setting, and explain what they observe. Learn gives a starting point. Practice and Challenge offer new goals with the same scene.
This is an idealized simple circuit with a fixed battery and simplified lamp behavior. It does not model mains electricity, real wire resistance, or complex electronic components.
Continue with Electric Circuits for Kids .