seegongsik
Grade 2 (age 7-8)

grade 2 Magnets Play

A magnet is an object that pulls things made of iron toward it. Things made of iron, such as paper clips and nails, stick to a magnet, but paper, wood, plastic and glass do not. A magnet has an N pole and an S pole at its ends: when different poles face each other they attract, and when the same poles face each other they repel. Change the distance between the two magnets in the picture to see how strong the force is, and flip magnet 2 to compare attracting and repelling.

N and S poles

50%
N faces S
🧲 The two poles of a magnet
①A magnet has an N pole and an S pole, and its pull is strongest at the ends (the poles)
②Different poles facing each other attract
③The same poles facing each other repel; flip magnet 2 in the picture so the N poles face each other and the arrows turn outward
④The closer the magnets are, the stronger the pull or push

What sticks to a magnet and what does not

🔩 Things that stick to a magnet
①Things made of iron, such as nails, paper clips and scissor blades
②Iron filings
③A refrigerator door made of steel sheet
🚫 Things that do not stick
①Wood, plastic, paper, glass and rubber
②Even some metals, such as aluminum and copper, do not stick; an aluminum drink can is a good example

Magnets in daily life

🏠 Magnets in daily life
①Magnets inside the rubber seal of a refrigerator door keep it shut
②Magnetic clasps on bags and pencil cases
③A compass needle is a small magnet whose N pole points north
④Speakers and electric motors have magnets inside

Summary

🎯 Magnets in short
①A magnet has an N pole and an S pole
②Different poles attract and the same poles repel
③The closer the magnets, the stronger the force
④Magnets attract things made of iron, but not wood, plastic or aluminum
⑤Magnets are used all around us, in compasses, refrigerator doors and speakers

Examples and Unit Test

Example 1
What happens when you face the N pole of a magnet toward an S pole? What about the same poles?
1
An N pole and an S pole (different poles) attract each other.
2
N and N, or S and S (the same poles), repel each other.
▸ Different poles attract / same poles repel
Change the direction of magnet 2 in the picture to see attracting and repelling one after the other.
Example 2
Which of these sticks to a magnet: a nail, a wooden stick or a plastic cup?
1
Magnets stick to things made of iron.
2
A nail is made of iron, so it sticks; wood and plastic do not.
▸ The nail (it is made of iron, so it sticks)
Wood, plastic, paper and glass do not stick to magnets.
Unit Test
Which object sticks to a magnet?
①A wooden stick
②An iron paper clip
③A plastic cup
④Paper
⑤A glass
▸ ② An iron paper clip
1
Magnets stick to things made of iron.
2
An iron paper clip sticks, but wood, plastic, paper and glass do not.
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