Curated OER
Electromagnets
Students conduct a series of experiments on electromagnets. For this physics lesson, students build their own electromagnet and explain how it works. They determine the factors that affect its strength.
Science Education Resource Center at Carleton College
Serc: Building an Electromagnet
Students will demonstrate how an electric current can make an iron object magnetic by building an electromagnet with a steel nail, insulated wire, a simple switch, a battery/cell, and small metal washers. Students predict the number of...
Smithsonian Institution
Lemelson Center: Spark!lab: Build a Speaker
Learn how to build your very own speaker with items usually found around the house. Follow step-by-step instructions and discover how to use your speaker to listen to the radio.