چهارشنبه 9 فروردين 1396 - 1 رجب 1438 - 29 مارس 2017
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1 رجب 1438 - Wednesday, March 29, 2017
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Use warm water to rinse out a plastic jug. While the air in the jug is still warm, put the cap on tightly and place the jug into a ...
Change the flow
Clean a pencil with soap and water, then hold it almost straight up and down over a sink or jar. Pour a thin stream of water from a glass or pitcher onto the side of the pencil. The water will ...
Blow up a balloon and rub it against your head to make your hair stand on end. 2. Tie a second balloon to the end of a long piece of thread. Tape the other end of the thread to the center of a doorway, so the balloon hangs down. Rub the first balloon ...
Water Beats Gravity
Fill a glass with water. Use a rubber band to hold a handkerchief or bandanna tightly over the top. Over a sink, quickly turn the glass upside down. The water should stay in the glass.Use a finger to ...
Kitchen Mystery … Solved!
What happens inside biscuits and cookies as they bake? They go into the oven as thick dough. Then baking soda or baking powder makes them inflate: tiny pockets of ...
Cool to the Touch
Lay a metal tray and a wooden cutting board next to each other on a table. Leave them in place for at least 30 minutes so that they both ...
Iron Burns …Slowly
Sometimes a big load of iron in a ship can get hot. The heat can even set other materials on fire. That’s because the iron is rusting, which means it is burning very, very slowly. Iron rusts in a chemical reaction called ...
Ice cube Glue
Over a plate, press the flat sides of two ice cubes together. Slowly count to 30, then let go of one ice cube. Why do they stick together? ...
Catch the Fizz from Soda Pop
Open the bottle and hold the opening to your ear. Can you hear the soda fizzing? Pour about a teaspoon of ...
With the help from an adult, put hot tap water into a glass. Put ice water into another glass. Why does fog form on different parts of the two glasses? ...
How to Be Safe in Ice and Snow (Part 2)
Sometimes if youre out having fun, its easy to forget to pay attention to your body. But if your body temperature drops even 4 or 5 degrees while youre outside, it can make you feel crummy. Thats why you need to be ...
How to Be Safe in Ice and Snow (Part 1)
Your dream finally came true . . . it was announced on the radio and on TV . . . its a snow day! Schools closed for the whole day, and that means its time for one thing: going outside to have fun in the snow. Or maybe ...
Which way will they go?
Use string to hang two apples or balloons at the same height and about one inch apart. Blow through the space between them. What happens? ...
Pepper Pick Up
Sprinkle some salt and ground pepper onto a plate. Blow up a balloon and rub it against your dry hair. Now slowly bring the ...
Lay a sheet of notebook paper across two books, and load coins onto the paper. The paper sags. Now bend and ...
Mixing Oil and Water
Some things just dont get along well with each other. Take oil and water as an example, you can mix them together and shake as hard as you like but ...
Into Thin Air
Set a glass and a large plate side by side on a counter. Pour ¼ cup of water into the glass and ...
Do you know how Arctic seals, walruses, and sea lions can live in icy waters? Try this to find out. Coat one of your fingers with ...
Spinning in the Wind
One basic idea makes pinwheels and windmills work: the turbine. Heres how to make a simple one. With scissors, cut a square out of ...
Pour a tablespoon of vegetable oil into a mug. Add two drops each of red and blue food colouring. Stir until the food colouring breaks up into tiny drops. Pour the mixture into ...
Make a Pinhole Camera
How does a camera change a big scene into a small picture? To see for yourself, make a pinhole camera. Start with ...
Nightmares are not real and can’t hurt you (Part 2)
Although it is normal to have a nightmare once in a while, there are some techniques you can try to get nightmares under control ...
Nightmares are not real and can’t hurt you (Part 1)
Ben is in the middle of a wonderful dream. He’s riding the ocean waves with his family when — BAM! — Along comes a giant sea creature poised for attack. Ben thrashes in bed, trying to fight off the monster. When he calls out, his ...
Test anxiety and tips to ease it (Part 2)
Well, because we can’t outlaw tests, we might as well figure out how to ease test anxiety. Anxiety is a feeling a person gets when he or she expects something stressful to happen. When you’re under stress, your body ...
Test anxiety and tips to ease it (Part 1)
Today’s the day of a big test at school, and you feel awful. Your stomach hurts and you have a headache. Maybe your muscles feel tense and you feel shaky or sweaty. You know you ...
Braces make your smile beautiful (Part 2)
Braces straighten teeth by putting steady pressure on your teeth and by staying in place for a certain amount of time. Most kids just need regular braces with ...
Braces make your smile beautiful (Part 1)
Some kids can’t wait to get braces. Others are a little worried about what it will be like or how they will look. It can help to ...
Wow, I’m really stressed out (Part 2)
If you’re feeling tired and stressed because you have too much going on, like lots of after-school activities, you might feel better if you drop something, even if it’s just for a semester or so. Sometimes ...
Wow, I’m really stressed out (Part 1)
Have you ever felt sick to your stomach during a test? Have you had days when you were so loaded down with homework that you had trouble sleeping? Have you ever been so worried about something that you ended up with a terrible headache? If so, then you ..
What Sleep Is and Why All Kids Need It (Part 2)
REM stands for Rapid Eye Movement. Even though the muscles in the rest of your body are totally relaxed, your eyes move ...
What Sleep Is and Why All Kids Need It (Part 1)
Time to get ready for bed! someone calls from the other room. Oh, no! You’re really into the great book you’re reading or that computer game that you’re winning.Why do I have to go to bed? you ask. Sleep is ...
A Cupful of Compass
Here’s an easy way to make a magnetic compass. The only things you need that may not be in your kitchen are ...
Ready, Set, Breakfast!
Eat your breakfast. It’s the most important meal of the day! Why are parents always saying that? Well, imagine you’re a ...
Do Eggs Float?
In water, is an egg more like a boat or a rock? The answer depends on what’s in the water. Try this experiment to see for yourself. And do it near the ...
Feeling Too Tall or Too Short (Part 2)
You might want to know how tall you will be. Will you be nose to nose with your mom or dad someday? There’s no way to know for sure how tall a kid will be as an adult, but it’s easy to ...
Feeling Too Tall or Too Short (Part 1)
Line up shortest to tallest! the teacher calls out. Not again, some kids might groan — especially if they have to stand at one end or the other. For most kids, height isn’t something they ...
Ice Cube on a Wire
For this activity you need a thin strong wire about two feet long. You can find a good one by carefully unraveling a ...
Mitral Valve Prolapse (Part 2)
Most kids who learn they have MVP find out about it during a regular checkup. The doctor may be listening to the kids heart and hear a ...
Mitral Valve Prolapse (Part 1)
Many kids and grown-ups have something called mitral valve prolapse (say: my-trul valv pro-laps). For most people, its a ...
You’re Heart & Circulatory System (Part 3)
When you go for a checkup, your doctor uses a stethoscope to listen carefully to your heart. A healthy heart makes a ...
You’re Heart & Circulatory System (Part 2)
The heart is made up of four different blood-filled areas, and each of these areas is called ...
You’re Heart & Circulatory System (Part 1)
Did you give your friends valentines and little heart-shaped candies on Valentines Day? Do you ever cross your heart when making a promise that ...
Taking Charge of Anger (Part 2)
When someone you know is angry, he or she may stomp away or stop talking to you, or become quiet and withdrawn. Some people scream ...
Taking Charge of Anger (Part 1)
Have you ever lost your temper? Did you yell and scream or want to hit someone? Maybe your little brother got into your room and played with your toys without permission. Or ...
How to Pick a Great Book to Read
The world is full of great books, just waiting to be read. How can you pick one youll really like? Here are some tips: ...
Computers Can Be a Real Pain
If youre like a lot of kids, you probably spend time sitting at the computer, doing schoolwork or playing games. But whether youre writing a report about ...
Talking About Your Feelings
Sometimes the toughest thing about feelings is sharing them with others. Sharing your feelings helps you when your feelings are good and when they arent so good. Sharing also ...
Getting Along With Brothers and Sisters
In a house with more than one kid, there are bound to be some problems. Brothers and sisters borrow stuff, and dont always return it in top condition. Younger kids sometimes ...
Getting Along With Parents
Mom and dad — theyre two of the most important people in your life. You probably see at least one of them every day and, over your ...
When Its Just You After School (Part2)
Knowing how to stay safe is just as important as knowing the family rules. Again, this is something you need to ...
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