Teaching Electricity with Circuit Construction Kit (DC Only): Lesson Plans and Assessments

Teaching Electricity with Circuit Construction Kit (DC Only): Lesson Plans and Assessments

Overview

A short unit (3 lessons) using PhET’s Circuit Construction Kit (DC Only) to teach basic DC circuit concepts: components, series vs. parallel, voltage, current, resistance, and simple measurements. Each lesson includes objectives, activities, timing, materials, formative checks, and an assessment. Designed for 45–60 minute class periods for grades 6–9.

3-Lesson Unit Summary

Lesson 1 — Components & Simple Series Circuits

• Objectives: Recognize battery, wire, bulb, switch, resistor; build a functioning series circuit; predict effect of adding bulbs.
• Materials: Computers/tablets with Circuit Construction Kit (DC Only), projector, student worksheet, exit ticket.
• Steps (45–60 min):
  1. (5 min) Hook: show an image of a broken bulb and ask why it’s dim/not lit.
  2. (10 min) Demo: teacher builds a simple circuit in the simulator; point out components and how to add/remove connections.
  3. (20 min) Student activity: build a single-bulb series circuit; add a second bulb; record changes in brightness; try opening switch.
  4. (5 min) Formative check: quick whiteboard share of observations.
  5. (5–10 min) Exit ticket: sketch circuit and predict brightness after adding second bulb.
• Formative prompts: “What happens to brightness when another bulb is added? Why?”; quick checks of circuit continuity.

Lesson 2 — Parallel Circuits & Comparisons

• Objectives: Build parallel circuits; compare voltage/current distribution; explain differences in bulb brightness.
• Materials: Same as Lesson 1 plus worksheet with comparison table.
• Steps (45–60 min):
  1. (5 min) Warm-up: recall series behavior via exit tickets.
  2. (10 min) Demo: construct parallel branches in simulator; show bulbs staying bright with added branches.
  3. (25–30 min) Student lab: create series and parallel setups; measure relative brightness and use the ammeter/voltmeter tools to note differences; fill comparison table.
  4. (5–10 min) Share conclusions and teacher summary linking to concept of current paths and voltage across branches.
• Formative checks: student-generated claims with evidence (screenshot or numbers).

Lesson 3 — Voltage, Current, Resistance & Troubleshooting

• Objectives: Use virtual meters to measure voltage and current; relate component count to resistance qualitatively; practice diagnosing non-working circuits.
• Materials: Simulator, meter worksheet, troubleshooting scenarios handout.
• Steps (45–60 min):
  1. (5 min) Quick review of series vs. parallel.
  2. (15 min) Guided measurement: students place voltmeter and ammeter in circuits, record readings for different configurations.
  3. (20 min) Troubleshooting stations: pre-made broken circuit scenarios (loose wire, reversed component, dead battery) — students fix and explain.
  4. (5–10 min) Practical quiz: short task to repair a circuit and answer conceptual questions.
• Assessment criteria: correct meter placement, reasonable interpretation of readings, clear troubleshooting explanation.

Assessment Plan

• Formative: exit tickets, worksheet checks, screenshots, mini whiteboard claims.
• Summative: combined grade from lab worksheet (40%), practical quiz/troubleshooting (40%), short written quiz on concepts (20%).
• Rubric highlights:
  • Construction accuracy (20%): correct wiring and meter placement.
  • Conceptual explanation (30%): clear reasoning linking observations to voltage/current/resistance.
  • Data recording (20%): complete and labeled measurements.
  • Troubleshooting skill (30%): diagnosis and fix with justification.

Differentiation & Extensions

• Struggling learners: provide step-by-step guides, labeled screenshots, partner work, simplified tasks (one change at a time).
• Advanced students: calculate approximate current using bulb resistance values, design experiments to test Ohm’s law, create multi-branch circuits with switches.
• Remote/low-tech option: printable circuit diagrams and physical kits (if available) with similar tasks.

Assessment Examples (samples to copy)

• Exit ticket question: “Sketch a circuit with two bulbs in series. Predict which bulb is brighter after adding a third identical bulb and explain why.”
• Practical quiz task: “A circuit’s bulb won’t light. Using the simulator’s tools, show where you would place an ammeter and voltmeter, find the fault, fix it, and submit a screenshot with a one-sentence explanation.”
• Short written quiz (5 questions): multiple choice + 2 short answers covering series vs. parallel, meter usage, and qualitative Ohm’s law.

Quick teacher tips

• Preload scenarios and screenshots to save class time.
• Encourage students to take screenshots of setups and results for evidence.
• Use peer review: have students swap explanations to check reasoning.