Bucket without a bottom

Le a r n

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Sanja Matijašević

T E K BUC T U O H T I W

M O T T O AB OTHER AND

S T N E M EXPERI

N E R D L I H FOR C

2

Sanja Matijašević

T E K BUC T U O H T I W M O T T O B A ND OTHER A S T N E M I EXPER N E R D L I FOR CH

Children are lucky.

Any time and any day is the right time for playing and learning!

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Hi! My name is Cur ly.

I want to share with you everyth ing I know about the c o lo r fu l a n d mysterious surr I believe you ha oundings we live in. ve adventures are no idea how many wait and you don’t eveing for you, n to leave your ho have m Are you ready? e.

THE PAPER LID

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You can find them everywhere. On shelves, on the floor. How can the torn notebook sheets the desk, in the drawers, and often on covered in writing be used? That’s right, the sheets with the drawings you no longer like which will stop water from leaking out of a . Here’s an idea: use them to make a lid glass, even when it’s turned upside down.

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t you need: a h a sheet of paper

a cup

water

1. Fill the cup with water to the very top.

2. Cover the cup with a sheet of paper. Put your palm over the paper and quickly turn the glass upside down.

3. When you remove your palm, you’ll see that ordinary paper prevents the water from leaking out of the glass.

invisible me: In this experiment you have an you Just between you and me Once you remove r helper. It’s the air which fills the room. ssing the paper hand from the paper, the air will keep pre and keep the cup covered.

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E N I L N O I S S I M S N WATERY TRA

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I love transmission-line posts. Sometimes I count them while I’m traveling.

I like them because they support the lines on flights. I know, adults keep telling me that which the birds rest from long the to our house, but I somehow prefer the bit se lines in fact transport electricity wit transmission line and used it to transfer wat h the birds. I once made a watery er birds came to rest, but it was fun. You should from one place to another. No try it too!

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t you need: ha three tall glasses for water

two coffee cups

three nails

a pair of scissors

some wool

water

1. Arrange the glasses and cups close to each other, so that the cups are placed exactly in the middle of the space between the glasses.

2. Cut two long pieces of wool and put them on top of each other. Then tie the wool to the nails (just like in the picture).

3. Put one nail in each glass. Spread the wool a bit between the rims of glasses, so that it hangs between them.

4. Fill all of the glasses with water.

Wait for half an hour and you’ll see that the cups will start to fill with water.

Water transmission successful!

with me: Once the wool becomes soaked ght Just between you and me , the wei ir the of e Becaus water, small drops will form inside it.woo cups. the into fall l and they drops become separated from the 9

N O O L L A B D IE T A E T A L F IN

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Anyone who ever threw a birthday party kno ws how boring and hard it can be to inflate balloons. Did you know that a bal you’re not blowing in it? Actually, it can even loon could be inflated even when be inflated when it was tied up properly, so that no air could enter it.

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t you need: ha a balloon

some rope

a big jar with a lid

a nail

a hammer

a vacuum cleaner

1. Inflate the balloon just a little, so that it can fit in your hands. Then tie it hard with a rope. Make a hole in the middle of the jar lid using the hammer and the nail.

2. Put the balloon in the jar and close it properly. It is very important that the lid fits well to the opening of the jar.

3. Turn on the vacuum cleaner and place the hose (without any attachments) on the lid. Soon the balloon will start to expand.

me: When you use the vacuum cleaner Just between you and me the air in the balloon to take out all the air out of the jar, rts grow. starts to expand and the balloon sta to 11

THE SMILING FROG

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Not many people keep frogs as pets. If the fro maybe things would have been different. But gs could laugh or cry, unt your own frog which will change its mood acc il they learn, you can make ording to your wishes. t you need: ha red sewing a thin piece of string

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thread

water and dishwashing liquid

a water container

a piece of cardboard

a pencil, pair of ap orss and cisssor scis some glue

1. Pour some dishwashing liquid in the container previously filled with water.

Mix the liquid with your fingers until you create foam. After this, make sure you wash your hands!

2. Bend one end of the string and make a circle. Then tie the thread to the opposite parts of the circle, but so that it stays loose (the thread should not touch the edges of the string).

3. Use the cardboard to draw eyes, then cut them out and glue them to the upper half of the circle. Now your frog is ready to play.

4. Dip in the string frog in the container with foam, and then take it out. A bubble layer will form on the frame. If you’d like the frog to smile, use the top of the pencil and gently touch the part above the thread (where its nose should be). If you’d like the frog to show a sad expression, touch it gently below the thread (where its chin should be).

elastic me: The bubble acts as a stretchedbub Just between you and me ble is not the g touched. If layer of rubber which shrinks after bein string frame during punctured, it attracts the thread to the the process of shrinking and stretches it.

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F L O W D A B IG B E H T E TO SPIT

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“I’ll huff and I’ll puff and I’ll blow your hou se threat which made the three little pigs shu down!” This is the famous dde had no idea that the objects could be joined r. I bet that the big bad wolf tog them. What’s that? You don’t believe me? See ether if you blew between for yourself then!

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t you need: ha er a hair dry

two ping-pong balls

some sewing thread

a pair of scissors

some adhesive tape

1. Cut two pieces of thread of equal length. Stick one end of the thread to the ping-pong, and the other to the back of the chair. The distance between the hanging balls should be enough for a hand to pass between them.

2. Switch on the hair dryer and place it so that it blows between the balls.

3. What’s going on? The balls are stuck together! Do you believe me now?

Just between you and me: By blowing, you are weakening the air pressure between the balls. The air from the side starts to press the balls more strongly and forces them to join together.

me: By blowing, you are weakening the Just between you and me the side starts to air pressure between the balls. The airesfrom them to join together. press the balls more strongly and forc 15

T N A W ’T N S E O D N W O L THE C TO GO TO SLEEP

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Sleep makes you grow. In dreams you can be and a lot more… Why is it so hard for us to a princess, you can fly, defeat a giant a friend today. He is a clown and he never go to bed then? I will introduce you to sleeps. Why don’t you try persuading him!

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t you need: ha a white sheet d a drie egg shell

of paper and a pair of scissors

some flour, water, some adhesive tape

decorative paper, glue

red wool

coffee cup and spoon

1. Stir in a spoonful of flour in the coffee cup with two spoons of water. Use this mixture to fill the bigger half of the dried egg shell.

2. Use the sheet of paper to make a cone. If necessary, shorten it, so that the opening rests on the egg shell.

3. Use the decorative paper, or colored paper to make the eyes, nose and mouth for the clown and glue them to the cone.

4. Cover the top of the cone with glue and then roll it in the finely shredded wool. Connect the cone and the filled egg shell with the adhesive tape.

5. Try to place the clown in the sleeping position. Knock him down again! Try again!

Why does the clown keep getting up?

ss is in me: The biggest part of the clown’s llma Just between you and me gh with which the she was filled. its shell. More precisely, it’s the douwhi ch the center of their mass is All bodies tend to take positions in sta g. above the surface on which they are ndin 17

L e a r n a n d h ave f u n d Let’s play an er! learn togeth

A curious ? e b o t e k li you What would ian, or an ic t a m e h t a m eat scientist, a gr suggestions d n fi l ’l u o y k this boo will help h explorer? In ic h w s k s ta d fun for games an g things in t s e r e t in s u vario you discover l world that fu r e d n o w e h from t u. surrounds yo