Explore a circuit one change at a time

Make a prediction and investigate

Record the initial circuit settings and readout. Change one electrical control and compare the current while holding the other conditions fixed.

Controls in the actual lab

• Voltage: starts at 6 V; available range 1–12 V.
• Resistance: starts at 12 Ω; available range 2–40 Ω.

Current is what flows. Raise voltage, more current. Raise resistance, less current. The lamp is a readout of I = V / R.

Discuss the evidence

Use the circuit readout as evidence. Explain the difference between changing a setting and measuring a result.

Try it beyond the activity

Write a prediction for a third setting. This is a virtual investigation; do not reproduce it with household mains electricity.

Record your thinking

Sources and limits

This companion uses the published Electricity activity and its learning guidance. Review any original sources linked there. It is a discussion plan by Lesson Worlds, not a scored assessment, a standards certification, or evidence of learning gains.

Use this activity with a learner

Families and educators · choose by prior knowledge

Learning goal: Current is what flows. Raise voltage, more current. Raise resistance, less current. The lamp is a readout of I = V / R.

Before you begin: Read the controls for Voltage, Resistance. Make one prediction before changing a setting.

Check understanding: Ask for one observation, the evidence that supports it, and a question to investigate next.

A simulation simplifies the real world. Explain which conditions stayed fixed; a successful run alone does not demonstrate mastery.

Activity and guide by Lesson Worlds. About the platform.