All kits
Tommy — TradeWorld apprentice and explorerTheo — TradeWorld smart thermostat guide
Trade Lab · Page 1 of 6

Paper Circuit Builder

What is a circuit?

A circuit is a complete loop where electricity flows. Today you will build one using paper cut-outs.

Tommy & Theo TradeWorld™ · tommytrade.manus.space · Operated by Support HVACR Trade Inc.
Tommy — TradeWorld apprentice and explorerTheo — TradeWorld smart thermostat guide
Trade Lab · Page 2 of 6

Paper Circuit Builder

Components

Battery (the power source) · Wire (the path) · Switch (controls flow) · Light bulb (the load that lights up)

Tommy & Theo TradeWorld™ · tommytrade.manus.space · Operated by Support HVACR Trade Inc.
Tommy — TradeWorld apprentice and explorerTheo — TradeWorld smart thermostat guide
Trade Lab · Page 3 of 6

Paper Circuit Builder

Activity 1: Cut & Connect

Activity

Cut out the 4 component cards on the next page. Arrange them in a loop on your desk so electricity can flow from the battery, through a switch, through a bulb, and back to the battery.

Tommy & Theo TradeWorld™ · tommytrade.manus.space · Operated by Support HVACR Trade Inc.
Tommy — TradeWorld apprentice and explorerTheo — TradeWorld smart thermostat guide
Trade Lab · Page 4 of 6

Paper Circuit Builder

Activity 2: Open vs. Closed

Activity

Show your teacher when your switch is OPEN (no light) and CLOSED (light on). Explain in your own words what changed.

Tommy & Theo TradeWorld™ · tommytrade.manus.space · Operated by Support HVACR Trade Inc.
Tommy — TradeWorld apprentice and explorerTheo — TradeWorld smart thermostat guide
Trade Lab · Page 5 of 6

Paper Circuit Builder

Vocabulary check

Source · Wire · Load · Switch · Circuit · Open · Closed · Series · Parallel

Tommy & Theo TradeWorld™ · tommytrade.manus.space · Operated by Support HVACR Trade Inc.
Tommy — TradeWorld apprentice and explorerTheo — TradeWorld smart thermostat guide
Trade Lab · Page 6 of 6

Paper Circuit Builder

Reflection

Activity

Draw a circuit you might find in your own home. Label the source, wires, switch, and load.

Tommy & Theo TradeWorld™ · tommytrade.manus.space · Operated by Support HVACR Trade Inc.