Download Magnetism Lesson Plan

12/20/13
Magnetism Lesson Plan
Magnetism Lesson Plan
by Kelly LaHuis
Resources
Resources
Magnets and Magnetism http://www.youtube.com/watch?
v=ak8Bh9Zka50&feature=related
How Does a Compass Work? http://www.youtube.com/watch?v=lSaXhVEE4oQ
Materials
MATERIALS needed:
Magnetism worksheets (25)
Large bowl, preferably circular and plastic (7)
Plastic lid (I used one from an oatmeal can) (7)
Bar magnet with north and south poles labeled (7)
Sticky Tack or some sort of movable adhesive (7)
Four squares of paper labeled North, South, East, and West (7)
Printed Review Sheet (25)
Computer with Internet Access
Attachments
Magnetism_worksheets.rtf
Standards
Standards
NGSS-2013.3-PS2-3
Ask questions to determine cause and effect relationships of
electric or magnetic interactions between two objects not in
contact with each other. [Clarification Statement: Examples
of an electric force could include the force on hair from an
electrically charged balloon and the electrical forces between
a charged rod and pieces of paper; examples of a magnetic
force could include the force between two permanent
magnets, the force between an electromagnet and steel
paperclips, and the force exerted by one magnet versus the
force exerted by two magnets. Examples of cause and effect
relationships could include how the distance between objects
affects strength of the force and how the orientation of
magnets affects the direction of the magnetic force.]
[Assessment Boundary: Assessment is limited to forces
produced by objects that can be manipulated by students,
and electrical interactions are limited to static electricity.]
NGSS-2013.3-PS2-4.SEP.B
Planning and Carrying Out Investigations
NGSS-2013.3-PS2-4.PS2.B.2
Electric, and magnetic forces between a pair of objects do
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Magnetism Lesson Plan
not require that the objects be in contact. The sizes of the
forces in each situation depend on the properties of the
objects and their distances apart and, for forces between
two magnets, on their orientation relative to each other. (3PS2-3),(3-PS2-4)
Details
The Physical Environment
Students must wear safety glasses.
Students will not put magnets or sticky tack in their mouths.
Students will not play with the water in the bowl.
Caution: Students should not put magnets near electronic devices or personal medical
devices, doing so can cause damage to these devices.
Students will be placed in groups of four, equaling 6 groups. Each group will
have fours desks placed together.
Audience
3rd grade, 24 students
This lesson uses video, audio, manipulatives, and worksheets for the
students' different learning styles.
Accommodations and modifications will be made on an individual basis for
students with disabilities.
Behaviors that are unacceptable must be stopped and student(s) will not
participate in the rest of the experiment. They must sit and watch from the
side of the classroom. They must still pay attention though because they will
need to finish the written part of the experiment.
Outcome
(Prior Knowledge : Students know that magnets will attract certain objects.)
Students will observe how the earth's magnetic force interacts with a
homemade compass. They will hypothesize how a compass works, what
magnets are attracted to and what they repel. They will be able
to determine cause and effect relationships of electric or magnetic
interactions between two objects not in contact with each other.
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Objectives
The students will:
Investigate in a group of 4, how to make a compass using a bowl, filling it halfway
with water, placing the plastic lid on the water and then placing the magnet on the lid.
Explain how a compass works. (A certain end of the magnet will point North and the
other end will point south.) The South end of the magnet will be pointed to the North
because opposites ends attract.
Demonstrate knowledge of magnetism by discussing the properties of magnets.
(opposite ends attract)
Know the magnetic poles of the earth and their effect on magnets. North Pole attracts
South end of magnet. South Pole attracts North end of magnet.
The Five Es: Syntax of learning for the cycle
ENGAGEMENT (Introducing a Concept)
Engagement:
Start the lesson by getting the students hooked by showing the video.
Show video http://www.youtube.com/watch?v=ak8Bh9Zka50&feature=related
Hand out the Magnet facts page in the magnetism worksheets. Go over it with the
students.
3. Next, split the students into groups of four.
4. Have students make a hypothesis regarding which side of their bar magnet will point
north and what magnets stick (attract) too and write it in their science journals. Write
the sentence on the board. "If (I do this), then (this) will happen."
1.
2.
EXPLORATION
Give the students directions and model steps 1-4.
Details:
1.
2.
3.
4.
5.
6.
7.
8.
Ask students to take their magnets and try to see which sides attract each other and
which sides repel each other. Write the options they could get on the board. They
need to put whether it is NN, NS, or SS.
Next, have them fill the bowl about half full of water.
Place the plastic lid in the bowl of water so that the lid floats on top.
Rest the magnet on the plastic lid so that the magnet is also floating on top the water.
(If the magnet does not float, use a lighter magnet for this activity.)
Have the students hypothesize what will happen to the magnet.
The magnet will start to slowly spin in the water. The magnet is now interacting with
the earth’s magnetic field. Ask the students what they think is happening?
Why is their magnet spinning?
Allow the magnet to spin in the water for at least five minutes or until it stops
moving. When the magnet stops spinning, the south pole of the magnet will be
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Magnetism Lesson Plan
pointing towards the north pole of the earth. State to the students that they
now know which end of their magnet is the North End and which is the
South End.
9. Have students arrange the north, south, east, and west labeled squares of paper on
the table around the bowl to complete the compass. Have the students write down
their observations.
EXPLANATION
Teacher will have students watch the video clip to pull the lesson all together to make a
connection.
http://www.youtube.com/watch?v=lSaXhVEE4oQ
Ask the students, "How is the earth like a giant magnet? Why? What happens if we put the
North and South Poles of our magnets together? (attract) What if we put 2 North poles
together? (repel)
Next, students will work on a computer, either in the room or the computer lab. They will
go to http://phet.colorado.edu/en/simulation/magnet-and-compass and experiment.
They will have 10 minutes.
ELABORATION
Students will go back to their own desks. They will get out their science journals. They will
draw their own magnet showing the North and South Poles and demonstrating how the
magnetic fields flow through it. They also need to state whether their hypothesis was
correct.
EVALUATION and ASSESSMENT
The teacher will hand out review sheet for students to complete at 80% accuracy. Once
students have completed it, the class will discuss the correct answers.
Extension: Have the students take the extension activity home and see what a magnet
will stick to and what it will not stick too.
Rubric
Magnetism Rubric
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