Home Electricity Audit – Student Handout

Summary

This student worksheet guides learners through a complete investigation of household electricity use—step by step, with all calculations structured and repeatable.

Part 1: Explore an Electric Bill
Students identify key bill sections, calculate supply cost per kWh and total cost per kWh, and explain why bills change.

Part 2: Home Electricity Audit
Students predict their “Top 10” electricity users, then complete an audit by finding device watts (label or research), converting W → kW, estimating hours/day, calculating kWh/day, and computing cost/day using their kWh rate. A comprehensive appliance table includes lighting with a clear LED example.

Part 3: Analyze + Conclude
Students compare predictions to results, graph their data, research a more efficient appliance, and calculate potential savings (optional presentation extension included).

Skills built: quantitative reasoning, unit conversion, data tables, graph interpretation, and evidence-based conclusions.