Lesson Lesson Innovation Of Temporary As Well As Permanent Magnets Full General Scientific Discipline Course Of Written Report Iv

Lesson Plan of Temporary together with permanent Magnets

General Science Grade IV

Students’ Learning Outcomes

·         Demonstrate how magnets are formed together with stored.

·         Differentiate betwixt temporary together with permanent magnets.

Information for Teachers

·         Magnets tin live on made from magnetic materials past times rubbing them alongside permanent magnets.

·         There is a proper agency to shop magnets. Soft atomic set out 26 strips called ‘keepers’ are placed across their poles.

·         Temporary magnets are those which lose their magnets belongings later brusque time.

·         Permanent magnets are those which retain their magnetic belongings for long time.

·         Temporary magnets are made from iron.

·         Permanent magnets are formed from steel.

Material / Resources

Bar magnets, slice of atomic set out 26 rod, mutual pins, together with atomic set out 26 nails, newspaper clips, textbook

Worm upward activity

·         Show 2 similar thick atomic set out 26 wires to the students; ane of which has already been magnetized.

·         Demonstrate the working of the 2 wires past times using them to attract some atomic set out 26 nails.

·         Ask the students, are both of them working every bit magnets?

(Expected response: No)

·         Then inquire the students why does ane of the wires locomote every bit a magnet piece the other doesn’t?

·         Inform them that ane of the wires has been magnetized.

·         Inform that an atomic set out 26 wire tin live on made every bit magnet past times magnetizing it.

·         Now, perform the next activity to demo how an atomic set out 26 rod tin live on magnetized.

Development

Activity 1

·         Show 2 atomic set out 26 rods to the students.

·         Bring the rods unopen to each other.

·         Ask them, practise these rods demo attraction?

(Expected response: No)

·         Now house ane rod on the table.

·         Rub the rod alongside ane terminate of the bar magnet starting from ane side of the rod towards the other.

·         Repeat this procedure many times.

·         Now convey the rod most the other rod together with inquire the diverse questions like:

v  Do these attract each other now?

(Expected answer: Yes)

v  Has the outset rod teach a magnet?

(Expected response: Yes)

v  How tin magnet live on stored?

v  Now tell the students that a magnetic textile tin live on converted into a magnet past times rubbing a magnet over it.

v  Allow students inwards groups to magnetize some atomic set out 26 rods or wires.

·         Inform them that piece storing magnets, they should live on placed alongside contrary poles side past times side. Two pieces of soft atomic set out 26 should live on placed across the poles of the magnets. These are called keepers. Influenza A virus subtype H5N1 U-shaped magnet tin live on stored lone using alone ane keeper.

Activity 2

·         Ask the students to accept a permanent magnet together with repeatedly rub it on the surface of a newspaper clip/iron nail.

·         Ask them to rub bar magnet on the newspaper clip/iron smash inwards ane direction.

·         Ask them what happened to newspaper clip/iron nail.

(Students’ response: It is magnetized)

·         Now inquire them to exam together with tape their observation.

(Students’ observations: atomic set out 26 smash attracting newspaper clip)

Activity 3

·         Clamp a potent bar magnet inwards a horizontal seat alongside a stand.

·         Ask a pupil to convey a tiny atomic set out 26 smash most its ane pole(say N)

·         Ask the students: Does it stick to the magnet?

·         Ask some other pupil to accept some other atomic set out 26 smash together with endeavour to hang it from the outset nail.

·         Ask the students why is it pulled past times the outset nail?

(Students’ response: because the outset smash has teach a magnet nether the lawsuit of potent magnetic strength of the magnet)

·         Ask dissimilar students to hold hanging nails ane past times ane every bit could live on held past times the magnet. It forms a chain of nails.

·         Now hang some steel nails from the other pole of the magnet inwards the same manner.

·         Now inquire a pupil to withdraw the atomic set out 26 chain past times pulling the transcend smash away from the magnet. Ask the students: What happened together with why?

(Expected response: The atomic set out 26 nails no longer back upward each other together with autumn down)

·         Now withdraw the steel chain from the transcend together with and then inquire the students: does it collapse too?

(Expected answer: No)

·         Ask the students: Why did atomic set out 26 chain collapse together with the steel chain practise not?

·         Tell the students that atomic set out 26 nails teach magnets temporarily. On the other hand, steel nails retain their magnetism together with teach permanent magnets. So, magnets made past times atomic set out 26 are temporary magnets piece the magnets made past times steel are permanent magnets.

Sum upward / Conclusion

·         A magnet tin live on formed past times rubbing it alongside a permanent magnet. This is known every bit magnetization.

·         The temporary magnet tin live on formed from an atomic set out 26 bar.

·         The permanent magnet tin live on formed from a steel bar.

·         Temporary magnets lose their magnetic belongings inwards a brusque time.

·         Permanent magnets retain their magnetic belongings for a long time.

Assessment

Ask the students:

·         What tin hand to the smash if a magnet is rubbed on it from its both ends?

·         What is the divergence betwixt permanent together with temporary magnet?

Follow up

·         Instruct the students to endeavour to brand magnets from some other materials approximately them together with endeavour to magnetize a steel strip alongside a magnet other than a bar magnet.

·         Ask them to seat diverse appliances together with devices at habitation inwards which magnets are used. Note downward their names inwards their copies. Ask them that they tin consult alongside their elders.

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