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STEM story • Ages 7–9

What Makes the Light Turn On?

Vern discovers a tiny circuit

8 pages • read your way

Scroll on a phone, or open a two-page spread on a larger screen.

Vern beside a small electronics kit on a blue mat, with a glowing lamp

Page 1

What makes the light turn on?

Vern has a question and a little kit of parts ready to explore.

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Vern in a cozy reading nook with the circuit parts arranged nearby

Page 2

A quiet place to wonder

Before building, Vern slows down and looks closely at each part.

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Vern examining the battery holder in the electronics kit

Page 3

Where the energy starts

The battery is the starting place that gives the circuit energy to move.

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Vern looking at a complete connected loop with a glowing lamp

Page 4

A circuit is a loop

When the path connects all the way around, the lamp can shine.

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Vern examining an open switch while the lamp stays dark

Page 5

An open switch

An open switch leaves a gap, so the energy cannot complete its trip.

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Vern closing the switch as the lamp glows in the connected circuit

Page 6

A closed switch

Close the switch and the path is complete again.

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Vern with an unlit glass bulb, battery holder, switch, and loose colored leads

Page 7

Try it safely

Vern checks the parts first and keeps the experiment simple and safe.

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Vern beside the completed circuit with the lamp glowing brightly

Page 8

Remember the loop

Battery, wires, lamp, and switch: a complete loop lets the light turn on.

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