Electricity Games — Predict, Watch, Understand
These free electricity games let a child predict what a circuit will do, watch the bulb light or go dark, and see why. Circuits are full of surprises — adding a bulb can make the lights dimmer, and one broken bulb can knock out a whole string — so guessing first, then watching, is how the ideas actually stick. No ads, no sign-up.
Predict whether the bulb lights or stays dark — electricity only flows around a complete loop, so any gap or open switch stops it.
Drop a material into the gap and predict: does the bulb light? Metals conduct; rubber, wood and plastic block the flow.
Add another bulb in series and predict what happens — most kids guess brighter, but they all get dimmer.
One bulb burns out — predict which circuit keeps the others lit. Series is one path; parallel gives each bulb its own.
What kids learn
Electricity flows only around a complete loop; conductors (metals) let it through while insulators (rubber, wood, plastic) block it; bulbs wired in series share one current, so more bulbs means dimmer light and one break stops them all; bulbs in parallel each get their own path, so they stay bright and keep working on their own. Each game isolates one of these ideas and lets the child test a hunch against what really happens.
More science games
Explore the full set on the science games hub, including simple machines games and gravity games.
Common questions
Why do bulbs get dimmer when you add more in a series circuit?
Bulbs in series all share the same single current, and each bulb adds resistance. Add a second bulb and the current through the loop drops, so every bulb gets less energy and they all glow dimmer — not brighter, which is what most people expect. In a parallel circuit each bulb gets its own full current, so adding bulbs does not dim them.
What is an electric circuit?
A circuit is a complete loop that carries electricity from a battery, through wires and components (like a bulb), and back to the battery. Electricity only flows when the loop is complete — any gap in a wire, or an open switch, stops the flow and the bulb goes dark.
What is the difference between a series and a parallel circuit?
In a series circuit the parts are joined in one single path, so if one bulb breaks the whole loop is broken and every bulb goes out. In a parallel circuit each bulb sits on its own branch, so if one breaks the others still have a complete path and stay lit — which is why house wiring is parallel.
What materials conduct electricity, and which do not?
Metals such as copper, steel and aluminium are conductors — they let electricity flow, which is why wires are made of metal. Rubber, wood, plastic, glass and dry air are insulators — they block the flow, which is why wires are wrapped in plastic for safety.
What age are these electricity games for?
Roughly ages 8–12 (grades 3–6), and each game shows its grade band. Complete-the-Circuit and Conductor or Insulator suit grades 3–5; Bulb Brightness and Series vs Parallel are grades 4–6. The predict-and-watch format needs no reading-heavy setup.