# ALEX Classroom Resource

## Exploring Magnetic Fields

Classroom Resource Information

Title:

Exploring Magnetic Fields

URL:

Content Source:

Type: Lesson/Unit Plan

Overview:

In this lesson, students will see evidence of the magnetic field of a small magnet. The purpose of this lesson is to reinforce the concept that magnets attract and repel items and exert a magnetic field that can vary in strength.

Content Standard(s):
 Science SC2015 (2015) Grade: 8 Physical Science 12 ) Construct an argument from evidence explaining that fields exist between objects exerting forces on each other (e.g., interactions of magnets, electrically charged strips of tape, electrically charged pith balls, gravitational pull of the moon creating tides) even when the objects are not in contact. NAEP Framework NAEP Statement:: P12.22: Gravitation is a universal attractive force that each mass exerts on any other mass. The strength of the gravitational force between two masses is proportional to the masses and inversely proportional to the square of the distance between them. NAEP Statement:: P12.23: Electric force is a universal force that exists between any two charged objects. Opposite charges attract while like charges repel. The strength of the electric force is proportional to the magnitudes of the charges and inversely proportional to the square of the distance between them. Between any two charged particles, the electric force is vastly greater than the gravitational force. NAEP Statement:: P8.15a: Some forces between objects act when the objects are in direct contact or when they are not touching. NAEP Statement:: P8.15b: Magnetic, electrical, and gravitational forces can act at a distance. Unpacked Content Scientific And Engineering Practices:Engaging in Argument from EvidenceCrosscutting Concepts: Cause and EffectDisciplinary Core Idea: Motion and Stability: Forces and InteractionsEvidence Of Student Attainment:Students: Construct an argument using evidence that fields exist between objects that are exerting forces on each other even when they are not in contact. Teacher Vocabulary:Argument Evidence Field Forces Distance Exert ContactKnowledge:Students know: Two interacting objects can exert forces on each other even though the two interacting objects are not in contact with each other. Fields exist between objects exerting forces on each other even though the two interacting objects are not in contact with each other. The existing fields may be electric, magnetic, or gravitational.Skills:Students are able to: Articulate a statement that relates a given phenomenon to a scientific idea, including the idea that objects can interact at a distance. Identify and use multiple valid and reliable sources of evidence to construct an explanation that fields exist between objects exerting forces on each other even when the objects are not in contact. Use reasoning to connect the evidence and support an explanation that fields exist between objects exerting forces on each other even when the objects are not in contact.Understanding:Students understand that: Fields exist between objects exerting forces on each other even when the objects are not in contact.AMSTI Resources:AMSTI Module: Experimenting with Forces and Motion
Tags: field, force, magnet, magnetic