Holiday Lights: Play-Doh Circuits – Student

Summary

Guide students through building and testing real circuits with simple materials. The Student Guide introduces holiday lights as a real-world example of circuits, then leads students step by step through identifying LED polarity, building a series circuit, building a parallel circuit, and comparing brightness and reliability in each setup. Students sketch an LED and a 9-volt battery, make predictions before testing, record observations, and answer reflection questions that connect results to how modern and older holiday light strands function.

The guide also includes a Claim-Evidence-Reasoning writing task that helps students explain how adding LEDs affects brightness in series versus parallel circuits using ideas about voltage and current distribution. Final reflection questions push students to apply the concepts to troubleshooting and design decisions, including why manufacturers might combine circuit structures in real products.