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MIDDLE SCHOOL SCIENCE INSTRUCTIONAL GUIDE
8th Grade Theme: Systems
Unit 8-IVa
Unit Question: How Is Electricity a System?
Focus Question: How do electric circuits work?
HSCE and Depth of Knowledge (DOK) Level
P3.7A Explain how electric forces varies between charged objects; the
electric charge-interactions, how charged objects attract electrically neutral
objects by friction, conduction and induction, examples of induced static
charge. (2)
P4.10D Describe electric circuits and how electric current in a circuit is
determined by the potential difference (voltage) of the power source and the
resistance of the loads in the circuit. (2)
Key Concepts
Electric force, electric field, static electricity, conservation of charge, friction,
conduction, induction, static discharge, electric current, electric circuit,
conductor, insulator, voltage, voltage source, resistance,
Cross Curricular Connections:
ELA: Writing Explanations; Outlining with main and supporting ideas; Writing Analogies; Math: Measurement. Career Pathways: Electrical
Engineers, Photographers.
January-February
TEACHING OBJECTIVES AND RESOURCES
Weeks 19-23
1. Determine prior knowledge/student understanding of unit concept. (Pre-Assessment Item(s))
2. Explain how electric charges interact with each other.
 Text: Prentice Hall Electricity and Magnetism pp. 34-36.
 Lab Zone(Discover Activity): Can You Move a Can Without Touching It? P.34.
 Transparencies N13, and N14.
3.
Explain how static electricity builds up and transfer.
 Text: Prentice Hall Electricity and Magnetism , pp.37-41.
 Transparency N15.
 All in One Teaching Resource pp.106 -112.
 Adapted Reading and Study pp. 16 - 20.
 Discovery Channel Video Field Trip, Electricity.
4.
Explain how an electric current is produced and the differences between conductors and insulators.
 Text: Prentice Hall Electricity and Magnetism pp. 44-57
 All in One Teaching Resource p. 117 -126.
 Transparencies N17.
 Web Site: PHSchool.com, Web Code: cgd-4022; Web Code: cgd-4022.
5.
Describe what causes electric charges to flow in a circuit and how resistance affects current.
 Text: Prentice hall Electricity and Magnetism, pp. 48 – 51.
 Transparency N18.
 Lab Zone: Down the tubes.
 All in One Teaching Resource pp. 118 – 122.
 Adapted Reading and Study pp. 21 -25.
SAMPLE BELLWORK/DO NOW
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Describe how two types of charge, positive and negative, will react to
each other.
Make a list of different situations in which you have experienced
static electricity.
What type of materials will allow electric current to flow through
them, give some examples?
Explain why a bird does not get hurt when it perches on a noninsulated electric wire.
If after a thunder storm, you observe an electric pole with electrical
wires on the ground, why is it not safe to touch the electric wires?
SAMPLE ASSESSMENTS
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All in One Teacher Resource Review and reinforce pp. 111,122.
Reading and Study Workbook: electricity pp. 17-25 (Differentiated
Instruction).
Web site: scn-1421, cgd-4022.
Lab Zone (Skills Lab) Text pp 35,41,42-43,48,52-53.
Foldable : Differentiating transfer of static electricity by Friction,
Conduction and Induction.
MIDDLE SCHOOL SCIENCE INSTRUCTIONAL GUIDE
8th Grade Theme: Systems
Unit 8-IVb
Unit Question: How Is Electricity a System?
Focus Question: How do we experience electricity?
HSCE and Depth of Knowledge (DOK) level
P4.10x Explain Ohm’s Law, Work, and Power In circuits.(3)
P4.10g Compare the currents in parallel and series circuits.(2)
P4.10i Explain electrical safety, how circuit breakers and fuses protect
household appliances, and compare the energy used in one day by common
household appliances. (2)
Key Concepts
Ohm’s law, series circuit, ammeter, parallel circuit, voltmeter, power, short
circuit, grounded, third prong, fuse, circuit breaker.
Cross Curricular Connections:
ELA: Writing Explanations; Math: Decimals and Fractions; Career Pathways: Electricians, Electrical Inventors- Lewis Latimer, Edison,
TEACHING OBJECTIVES AND RESOURCES
January-February
Weeks 19-23
6. Explain and apply Ohm’s law, the basic features of an electric circuit and how many paths current can take in series and
parallel circuit.
 Text: Prentice Hall Electricity and Magnetism p. 61-66
 Lab Zone (Discover Activity); Do the lights keep shining? pp.60, 65
 Web Site: www.scilinks.org Web code; cgp-4023.
 Transparencies: N21, N23, N24, N22.
 All in One Teaching Resource p. 139-149 “Electric Circuits”
 Adapted Reading and Study pp.29 – 34.
7.
Describe how to calculate electric power and what factors are used to determine how people pay for electrical energy.
 Text: Prentice Hall Electricity and Magnetism pp. 67-70
 Web Site: www.scilinks.org Web code; scn-1425, 1426.
 Transparency: N26.
 All in One Teacher Resource p. 146-151 “Electric Power"
8.
What measures help protect people from electrical shock and shot circuits?
 Text: Prentice Hall Electricity and Magnetism pp. 71-77 “Electrical Safety”.
 Web Site: www.scilinks.org Web code; scn-1426
 Transparencies: N27, N28.
 All in One Teaching Resource pp. 152-176
 Adapted Reading and Study pp.37-39.
SAMPLE BELLWORK/DO NOW
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Make a list of all the objects in your home that use electricity.
When do we use series circuits in our home?
Describe how parallel circuits are used in our homes.
SAMPLE ASSESSMENTS
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Performance Assessment (Groups or individual) Construct an alarm
circuit that will light a bulb in response to some event. Lab Zone Unit
project.
All in One Teacher Resource Review and reinforce pp. 140-144,148150,154-157.
Reading and Study workbook: electricity pp. 29-39 (Differentiated
Instruction).
Web site: www.Scilinks.org Web Code: cgp-4023, scn-1425.
Adapted Test: Electricity
Lab Zone (Skills Activity) Text pp65, 68 (Discover Activity) pp67.
Foldable: Compare and contrast series and parallel circuits.
MIDDLE SCHOOL SCIENCE INSTRUCTIONAL GUIDE
8th Grade Theme: Systems
Unit 8-IVc
Unit Question: How Is Electricity a System?
Focus Question: How do electric and magnetic forces interact with each other?
HSCE and Depth of Knowledge (DOK) level
P3.8x Explain how magnetic and electric forces are two aspects of a single
electromagnetic force. (2)
P3.8b Explain how the interaction of electric and magnetic forces is the basis
for electric motors.(3)
Key Concepts
Electromagnet, Solenoid, electromagnet, electromagnetic force, open circuit,
closed circuit, energy, mechanical energy, electrical energy, galvanometer,
electric motor.
Cross Curricular Connections:
ELA: Writing Explanations; Descriptive writing; Math: Problem Solving, Formulae derivatives, SS: Light Pollution in cities and countryside.
Career
January-February
Weeks 19-23
9.
TEACHING OBJECTIVES AND RESOURCES
Explain how an electric current is related to a magnetic field, some characteristics of a magnetic field produced by a current and the
characteristics of an electromagnet.
 Text: Prentice Hall Electricity And Magnetism pp. 80-84
 Lab Zone (Discover Activity): Are Magnetic Fields Limited to Magnets? Pp80
 Web Site: www.Scilinks.org Web code; scn-1431
 Transparencies: N29, N30, N31, N32.
 All in One Teaching Resource: p. 196-201
 Adapted Reading and Study, pp.40 - 43
10. Explain how electrical energy can be transformed into mechanical energy, how a galvanometer works and what an electric motor does.
 Text: Prentice Hall Electricity And Magnetism pp.85-89
 Web site: www.scilinks.org Web code; scn-1432. cgp-4033
 Transparencies: N33, N34, N35, N36.
 All in One Teaching Resource p. 203-212 “Electricity, Magnetism, and Motion”
 Adapted Reading and Study , pp.. 44 – 47.
 Skills Lab Video(DVD) : Building an Electric Motor.
11. Determine mastery of Unit content (post assessment item(s)).
SAMPLE BELLWORK/DO NOW
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Make a list of all the appliances in your home that uses electrical
energy.
If you have a microwave that has a power rating of 1.5kW, calculate
the electrical energy consumed after the microwave is used for 2hrs
(Use the formula Energy = Power X Time).
SAMPLE ASSESSMENTS
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Performance Assessment (groups or individual) Analyze how
electrical energy is used at home and determine how much electrical
energy their family uses.
All in One Teaching Resources: Section summary, p.203, Review and
Reinforce, p. 207, Enrich, p. 208.
Online Links: www.Scilinks.org ; Web Code: scn-1431, scn-1432,
cgh-4030.
Foldable: Show cause and effect of open and closed circuit in a
Doorbell. Text. P. 83.
Lab Zone: Building an Electric Motor.