Download Unit 13 Electromagnetic Fields

Campus: Princeton High School
Author(s): Lamothe
Date Created / Revised: 02 March 2017
Six Weeks Period: 5th
Grade Level & Course: 11th & Physics
Timeline: 8-10 days
Unit Title: Magnetic Fields and Electromagnetism
Stated
Objectives:
TEK # and SE
Lesson # 13
P.5A Research and describe the historical development of the concepts of electromagnetic forces
P.5D Identify examples of electric and magnetic forces in everyday life.
P. 5G Investigate and describe the relationship between electric and magnetic fields in applications
such as generators, motors and transformers
See Instructional Focus Document (IFD) for TEK Specificity
Key
Understandings
A moving electric charge is surrounded by a magnetic field.
An electric current can produce magnetism, which in turn can produce an electric current.
Interactions between electric and magnetic fields can be observed in everyday objects like,
motors, generators, and transformers.
Misconceptions
Students may think that larger magnets exert larger magnetic forces.
Students may think that magnets are the only objects with magnetic fields.
Students may think hat electricity and magnetism are not related in any way.
Key Vocabulary
Magnetic field
Magnetic force
Induction
Suggested Day
5E Model
Instructional Procedures
Day 1
Engage/
Explain
Engage:
What is magnetism?
Demo how magnets work
Electric current
Electromagnetism
Generator
Motor
Transformer
Materials, Resources, Notes
(Engage, Explore, Explain, Extend/Elaborate, Evaluate)
What is electromagnetism?
Demo electric current and its effect on a compass for
students. Ask for potential explanations based on students’
understanding of current and electricity and magnetism.
such as in this video
https://www.youtube.com/watch?v=6tG9fY0WX3U
Provide students with lab materials for electromagnets.
Have students complete lab and create stronger
electromagnets. Reverse polarity by switching battery and
recording attractions and repulsion of temporarily charged


http://hendrix2.uoregon.edu/~dlivelyb/phys101/lab7_s07.pdf
supplies: 9 v battery, copper wire, compass, alligator clips
paperclips.
Students record observations, view electromagnet
video demonstrating current and generated electric field
and then write explanation.
https://www.youtube.com/watch?v=TTFIXmubvkQ
Day 2 Explore
Explore:

Conceptual Physics textbook
and hand out of power notes
Demo moving magnet causes electric field using copper
pipe & magnet
Students further explore the connection between electric
current and magnetic field generation. Students and
teacher review vocabulary and key concepts of chapter
(Mcgraw Hill chapters 24-25) Assign table groups with
specializing in sections to be presented in class tomorrow.
First portion of class will be reading
individually and taking notes on your section and
relevant context.
After that, we will get into groups and compare notes
and prepare to present.
Properties of Magnets
Magnetic Fields Around Magnets
Electromagnetism
Forces on current Carrying Wires
Changing Magnettic Fields
Electric Generatiors
Lenz’s Law (page 684 & 685)
Lenz’s Law (page 686 & 687)
Transformers
Day 3 Explain
Explain:
Teacher led lecture and student explanation covering
topics from Chapter 36. Previously assigned topics will be
presented by students using teacher-generated graphics.
View short clips of Hewitt Drew-its as follow-up and
support.


http://www.ndted.org/TeachingResources/NDT_Tips/LenzLaw.htm
https://phet.colorado.edu/en/simulation/magnet-andcompass

https://www.youtube.com/watch?v=iMMKT_9rcpM
Day 4 Elaborate
Elaborate:
Define induction.
Demo inducing a current through a coil with a moving
magnet.
Pickup Coil, Transformer, & Generator tabs of faradays



https://phet.colorado.edu/en/simulation/magnet-andcompass
https://phet.colorado.edu/en/simulation/faraday
electromagnet lab
Students use Electromagnetic Phet to explore the
relationship between electrical currents and magnetism.
Clicker questions from Trish Loeblin as wrap up
Day 5 Explore
Review for test

Grudgeball
Day 6 Evaluation
6 weeks test

Day 7 Explore
Explore:
Students will apply what they have learned about
electromagnetic induction to build electric motors using wire
and batteries. Students explain motion of wire based on
electrical current in magnetic field. Can use textbook pages
to help explain operation. Use Stephen Murray Magnetic
Forces Worksheet and Magnetic Fields worksheets

Day 8 Explain
Evaluation:
Students explore applications of Lenz’s Law and
Faraday’s Law using Generator Phet simulation. Use Chris
Bines handout created on site. Students will differentiate
generators, motors, electromagnetic induction, pick up coil
and how magnetism and electric current are related.
Day 9 Explain
Explore:
Students use Stephen Murray worksheet packet to
review electromagnetic and magnetic concepts and
introduce mathematical equations for Faraday and Lenz’s
laws and transformers.

Day 10
Evaluation
Explain: Complete Stephen Murray worksheet packet and
do Problem Solving set 17.

Stephen Murray worksheets on
P drive
Explain:
Electromagnetic quiz.

Problem Solving set 17 from
Conceptual Physics
Accommodations
for Special
Populations


Stephen Murray worksheet from
P drive
http://phet.colorado.edu/files/activities/2932/C:_Done%20at%20School%20-%20To%20Move%20Home_Generator%20PhET%20Lab.docx
Accommodations for instruction will be provided as stated on each student’s (IEP)
Individual Education Plan for special education, 504, at risk, and ESL/Bilingual.