Build a working electromagnet from supplied materials
Ask a scientific question about electromagnets that can be answered with an in-class experiment
Plan and conduct an experiment to determine how a certain variable affects the strength of an electromagnet
Making an electromagnet from a battery, nail, and wire is a classic science demonstration. But instead of just demonstrating this for your students, let them explore it themselves! In this lesson they will discover how different variables affect the strength of an electromagnet.
Ask questions about data to determine the factors that affect the strength of electric and magnetic forces.
This lesson focuses on these aspects of NGSS Three Dimensional Learning:
Science & Engineering Practices
Disciplinary Core Ideas
Planning and Carrying Out Investigations.
Plan and conduct an investigation individually and collaboratively, and in the design: identify independent and dependent variables and controls, what tools are needed to do the gathering, how measurements will be recorded, and how many data are needed to support a claim.
PS2.B: Types of Interactions.
Electric and magnetic (electromagnetic) forces can be attractive or repulsive, and their sizes depend on the magnitudes of the charges, currents, or magnetic strengths involved and on the distances between the interacting objects.
Cause and Effect.
Cause and effect relationships may be used to predict phenomena in natural or designed systems.
You can find this page online at: https://www.sciencebuddies.org/teacher-resources/lesson-plans/strength-of-electromagnet
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