Lesson Plan of Natural and Artificial Magnets
General Science Grade IV
Students’ Learning Outcomes
· Investigate using a magnet that some materials are “magnetic” and some are “nonmagnetic”
· Recognize that a magnet has two poles.
Information for Teachers
· Some materials are magnetic and some are non-magnetic. · Magnetic materials are those which are attracted by the magnet.
· Non-magnetic materials are those which are not attracted by the magnet.
· A magnet has two poles. One is called the North Pole and the other is called South Pole.
· The magnet effect of a magnet is the strongest at the poles.
Material / Resources
Bar magnets, pencils, steel clips, pieces of wood, plastic objects, rulers, combs, erasers, steel nails, iron filing, textbook
Worm up activity
· Ask the students how many of them have seen a magic piece of metal which attracts the iron pieces.
· What do they call it?
· Now show a bar magnet to the class.
· Demonstrate that magnet attracts steel pins or clips.
Development
Activity 1
· Divide the students into groups.
· Give each group a bar magnet, some magnet and some non-magnetic materials.
· Ask students: Do you think a magnet will pull all types of things?
· Ask the students to test this property of magnet by bringing it near all the given objects turn by turn.
· After they have tested, ask them to identify the things which are attracted by the magnet and which are not attracted.
· Tell them that things which are attracted by the magnets are called magnetic materials and things which are not attracted by magnets are called non-magnetic materials.
· Ask the students to write the names of magnetic and non-magnetic objects in separate columns in their notebooks.
· Ask them what is common property in all the magnetic materials
Activity 2
· Give a bar magnet and some iron filings to each group.
· Ask them to place a magnet on a paper.
· Sprinkle the iron filings on to the bar magnet and tap the table gently.
· Observe the filing stuck to the bar magnet.
· Ask the students, are the filings evenly stuck to all parts of the magnet?
· Disturb the filings and repeat the process and see what happens.
· Ask the students questions like:
v On which parts of the magnet, are the iron filings mostly stuck?
(Expected answer: At their ends)
v Why are the iron filings stuck more at the ends?
(Expected answer: Magnet is stronger at the ends)
v What do you call the ends of the magnet?
(Expected answer: Poles of the Magnet)
· After this discussion, inform the students that the ends of magnet are called opposite poles and then introduce the terms of North Pole and South Pole.
Sum up / Conclusion
· The materials which are attracted by the magnet are called as magnetic materials
· The materials which are not attracted by a magnet are called non-magnetic materials.
· Most of the iron filings are attracted towards the ends of the magnet. These ends are called poles.
· There are two poles of a magnet. One is the North Pole and other is the South Pole.
Assessment
· Make a table on the board and ask them to copy it in their notebooks.
· Divide the students into groups.
· Provide each group the materials given in the table.
· Ask the students to predict, without using the magnet or not and then record their observations in the table. Instruct them put a tick in the right column.
· Provide each group a magnet and instruct them to test the objects and record their observations in the given table.
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Sr. no.
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Materials
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Prediction
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Result
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Will be attracted by magnet
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Will not be attracted by magnet
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Attracted by magnet
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Not attracted by magnet
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Wooden Strip
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Iron nail
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Coin
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Plastic ruler
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Steel ruler
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Cotton
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Pencil
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Paper clips
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Brass wire
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Copper wire
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Follow up
· Prepare a list of magnetic and non-magnetic materials present at your home or surroundings other than discussed in the classroom.
