Grade 3 · Science · Lesson 37

Make a Simple Electric Device

Electricity flows through a circuit — a complete loop of conducting materials. When the loop is unbroken (closed), electricity flows and a device like a bulb can light up. When the loop is broken (open), electricity cannot flow and the device stops working. Understanding circuits lets us build useful electric devices.

What this lesson teaches

1Name the four components of a simple electric circuit
2Distinguish between an open circuit and a closed circuit
3Plan and build a simple electric device using a battery, wires, and a bulb

Free · 7 days · No credit card

Unlock the full HSEA system for 7 days.

Create a kid profile, open any lesson, save progress — your family uses HSEA exactly the way a paying family does. Cancel anytime. Nothing to set up, no card required.

✓ All 1,680 lessons, Grades 1–6, every subject
✓ Profiles + saved progress for every kid
✓ Final exams + printable certificates

Start your 7-day free trial →

Already convinced? See full membership plans →