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8th Grade Science
UNIT Five
Title: Electricity Subject/Course: Science
Topic: Physical Science
Length: Two Weeks
Grade: 8th
UNIT GOALS AND EXPECTATIONS
Designer: Heather Johns
IMPORTANT CONCEPTS/UNDERSTANDINGS:
ESSENTIAL QUESTIONS:
BIG IDEAS:
• What is a closed circuit?
• Electricity and magnetism are two aspects of a
• What is a parallel circuit?
single electromagnetic force but each force has
• What is an open circuit?
its own definite properties.
• What is a closed circuit?
Concepts:
• What are differences and similarities between open
• Electricity and magnetism are two aspects of a
and closed series and parallel circuits?
single electromagnetic force. Moving electric
• What is the line of force in magnetic fields?
charges produce magnetic forces, and moving
• How do variables affect the strength of an
magnets produce electric forces. These effects
electromagnet?
help students to understand electric motors
• What is the difference between electricity and
and generators.
magnetism?
• Electricity in circuits can produce light, heat,
sound, and magnetic effects. Electrical circuits
require a complete loop through which an
electrical current can pass.
STUDENT LEARNING EXPECTATIONS:
PS.7.8.1 - Construct open and closed electrical circuits
-series circuits
-parallel circuits
PS.7.8.2 - Describe and diagram open and closed series and parallel circuits
PS.7.8.3 - Compare and contrast open and closed series circuits and parallel circuits
PS.6.8.2 - Conduct investigations demonstrating the field force (lines of force) in magnetic fields
PS.6.8.3 - Design and conduct investigations applying variables affecting the strength of an electromagnet
PS.6.8.4 - Analyze and compare the relationship between electricity and magnetism
SPECIFIC DECLARATIVE KNOWLEDGE –
What I know
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Define series circuit
Define parallel circuit
Differentiate between open and closed circuits
Identify circuits as closed or open
Define field force
Identify magnetic field
Identify lines of force in magnetic fields
Identify variables affecting strength of an
electromagnet
Determine the relationship between electricity
and magnetism
SPECIFIC PROCEDURAL KNOWLEDGE –
What I need to do
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Construct open and closed circuits—series
circuits, parallel circuits
Describe and diagram open and closed series and
parallel circuits
Compare and contrast open and closed series
circuits and parallel circuits
Conduct investigations demonstrating the field
force (lines of force) in magnetic fields
Design and conduct investigations applying
variables affecting the strength of an electromagnet
Analyze and compare the relationship between
electricity and magnetism
UNIT ASSESSMENTS
(Include tasks related to Dimensions 3 and 4 and Bloom’s Taxonomy)
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Short Circuit Lab
Venn Diagram
Electromagnet Lab
Let the force be with you Lab
Electric Motor Lab
Open Response
Traditional Assessments:
Unit 5 Test
Unit Notebook grade (graded throughout unit)
Parts of Circuit Quiz
Other Evidence of Learning:
Daily Notebook Entries
Lines of Learning (LOL)
ACTIVITIES AND LEARNING EXPERIENCES
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Short Circuit: Students will be given light bulbs, a battery and battery
holder, alligator clips, wire, and a switch. The students will be asked to turn
the light on. Once the students have accomplished this, they must then turn
two lights on. Then they must turn one light on while the other light remains
off. The students will diagram each time they build a model of the circuit,
whether it works or not.
Electromagnet: Students will be shown how to construct an electromagnet.
Students will then design their own experiment testing the electromagnet.
The students will be expected to change something about the electromagnet
in order to pick up more paperclips (or material provided). The students will
record their data and changes on a data table in their notebooks.
Let the force be with you: With no more than three in a group, students will
take a bar magnet placed between two pieces of paper and pour iron filings
on the paper to demonstrate the lines of magnetic force.
Venn Diagram: Students will create a Venn Diagram comparing and
contrasting open and closed series and parallel circuits
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Electric Motor: Students will be able to create their own motor using a
battery, small magnet and copper wire.
Resources
My Documents
SAMSC (South Arkansas
Math and Science Center)
My Documents
My Documents
My Documents
Career Connections
Based on what the students have learned about motors, generators and electricity, students will brainstorm all
possible careers.
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