Teaching sequence: Experiences with magnets

FOUNDATION

TO UNDERSTAND THE WORLD AROUND US AND HOW CHILDREN FUNCTION, THEY DEVELOP
HIS OWN HYPOTHESES.
THE TEACHER'S WORK IS TO POSE SITUATIONS IN WHICH CHILDREN CAN
PUT YOUR THEORIES TO THE TEST. IT SHOULD GUIDE YOU TO RESEARCH, EXPAND, MODIFY OR
EVEN REJECTING BASED ON HIS OWN EXPLORATION IN SUCH A WAY THAT HE
LEARNING IS MEANINGFUL FOR THEM.
MAGNETS ARE COMMON OBJECTS IN DAILY LIFE CHILD/REN AND THAT IS WHY WE HAVE
PROPOSED THAT THROUGH THE GAME THEY DISCOVER SOME OF THEIR CHARACTERISTICS AND
PROPERTIES.

Purposes:

It is expected that children will achieve:

Participate in the different experiences discovering the properties and

Characteristics of magnets. Appreciate their functions.

• Start in some procedures specific to scientific processes:

observe, formulate hypotheses, manipulate, experiment.

• Experiment with the properties of magnets in different situations.

Create an artificial magnet from everyday materials.

• Recognize that magnets attract certain metals, promoting the

discovery of its characteristics.

Contents

Approach to some characteristics of magnets.

Exploration of the actions and functions that can be performed with magnets.

Comparison and differentiation of magnetic and non-magnetic objects.

Recognition of magnetic elements found in nature and

those made by man.

The poles of a magnet.

Metal objects become magnetized to each other.

Use of magnets

Experiences with magnets

These activities are increasing in complexity so that they can be used only
some others, according to the age and understanding of the children.

1-We arrive at class with a bag to which a scissors is stuck. The children immediately notice.
this situation will be used to demonstrate the working method that we will use:

Note: You have a tag attached to the bag.

Hypothesis formulation: It is stuck by...

Experimentation: We are going to open the bag to check.

Information gathering.

2-Igniting questions to find out the prior knowledge of the children:

Have you ever seen a magnet? Where? Are they all the same? Do you have any at home? For what purpose?
Do they use it? What things does the magnet stick to?

Opinions will be exchanged without any exploration yet.

3- First experience:

Necessary materials:

A magnet for every child.

Classroom objects.

Experimentation: the children check if bringing their magnet into contact with an object makes it stick.
it being necessary to exert a force to detach it.

They record with drawings or write on their sheet both the places where it sticks and where it doesn't.

At the end of the session, a debriefing is conducted to discuss the results obtained.

The children have expanded their theory 'magnets stick to iron.'

The objective of this experience is to see that not all metals are iron, that there are
different metals and that some of them are magnetic and others are not.

Materials:

Clips, metal spoons, small scissors, nails, nuts, screws, safety pins, coins,
chains, rings, keys, wooden objects, plastic, paper, cardboard and fabric.

Experimentation:
The children in groups of 3 predict whether each of the objects will stick to the magnet or not, making
after the verification.

They will be asked to form a group with all the objects that were attracted by the magnet and
another group with the objects that were not attracted by the magnet.

We will observe that children reject all materials made of plastic, wood, paper...
They are left disoriented upon discovering that they do not stick to all metals.

To ensure this experience is documented, we will hang a poster divided into two columns.
the boys will set aside those objects that are attracted by the magnet and
those who do not, represented in images.

We concluded the session with a new expansion of the theory 'magnets stick to each other.'
special steels

5- THE POLES OF THE MAGNET

Experience 1

For this activity, each boy must have 2 magnets.

This instance of exploration is individual.

The question that will guide the activity is: What happens when we bring two magnets close together?

To find out, they will test by bringing one end of magnet number 1 close to one of
the ends of magnet number 2. What happened? Do they attract or repel?

Next, they will try bringing the same end of magnet number 1 closer to the other end of the
magnet number 2. Do they attract or repel each other? Did the same happen as before?

They will repeat this action of bringing the two ends of each magnet closer together, and they will observe that it always

the same happens.

With this activity, it will be possible to find out that:

The ends of the magnet are not the same: one is called north and the other is called south. The poles
Like poles repel each other. Opposite poles attract.

Experience 2

6-MAGNETIC FORCE

The objective of this experience is for the children to perceive magnetic force and observe how
acts remotely.

Materials: Sheets of different materials, cardstock, cardboard, plastic, CD cases...

Experimentation: The children in groups of 3 or 4 choose sheets of different materials and

they place a magnet on each side of the plate. They observe that the magnets stick.
when one moves, the other moves.

7- HOW TO BUILD A MAGNET?

Before starting this activity, the teacher will ask the boys and girls if they believe it is possible that
let's build magnets ourselves. A discussion will be held about the possibilities
responses. After this, the teachers will guide the students in the realization of the
next activity:

First, the kids will be instructed to take the washers and bring them closer to the objects.
placed on the table, and they comment on what happens.

Then they will take the washer and rub it many times with one end of the magnet, always in the
same address.

They will bring the washer closer to the same objects, checking how they adhere this time to
the washer. This will demonstrate that the washer is magnetized and we thus obtain small magnets.

Magnetic chains

Materials: Magnets and clips

Procedure:

By bringing the magnet near certain metallic objects, for example, a paperclip, a field is induced.
magnet in this that causes it to behave like a magnet. Therefore, when bringing this clip closer
(attached to the magnet), attracts another clip, and this one to another, until the magnetic force goes
decreasing at the end of the chain. This force disappears in the clips when we pull away the
magnet. Therefore, we can transform the clips into magnets, but only temporarily.

HOW TO MAKE A COMPASS?

For the next activity, the teacher will tell the boys/girls that there is a device.
technological device called COMPASS that helps us orient ourselves, which always points to the pole
north.

Material:

-1 magnet

1 piece of insulating tape

-1 needle (large with a round tip)

-1 container with water

-1 slice of cork

Magnetize the needle by rubbing the needle on the magnet.

Adhere the insulating tape to a small slice of cork.

3. Place the cork with the needle in the water and observe how the needle will point north.

For the children to notice it is necessary to work in groups and observe that all the needles have
stayed in the same position.

MAGNETIC GAMES
These games can serve as a closure to the experiences.

Game 1. Find the nail.

For this game, you need headless nails, toothpicks, and a few straws.
drinking soft drinks). A nail is placed inside a straw and the tip is bent so that the
Nail does not come out. In the others, the toothpicks are placed. All the straws are bent.
point so they look identical. All the straws are placed in a box and the
children search with the magnet for the straw that has the nail.

Game 2. Car race.

Several plastic cars are obtained (they can be from party supplies). Each car is given a
strap on each side. Take a piece of cardstock and mark a road on it. Then place the
cardboard on large wooden blocks. Then the cars are placed on the road and the
It allows children to move the cars using a magnet under the cardstock.

Game 3 Move the little boat.

Children can build a small boat (made of cork and a screw and a sail made
with a toothpick and paper) they place it in a glass container and with a magnet they must
move it through the glass from the outside.
Game 4. Let's go fishing!

Children can participate in the construction of this game by cutting out fish silhouettes.
cardboard or foam rubber) to which a metal clip (like those used to hold
papers) or you can also attach a washer to them.

For the rods, wooden or plastic sticks are used (they can be skewers with the
cut tip), string thread at the end of which a magnet is tied.

It is a very fun game for children that can turn into an activity.
mathematics since when counting what was caught you can exercise: classifications by
shape, size or color, use of quantifiers: more than, less than, as many as
assignment of different scores according to color or shape, notations, etc.