By : Tony Helies Roll a piece of clay into a smooth ball the size of a marble. Drop it onto a hard floor. Also drop a marble (or any hard object, like a penny or a paper clip). Which bounces higher? Why? Hint: Does the clay ball have a flat spot whe...
By : Tony Helies Roll a piece of clay into a smoo...
Watch water swirl down the drains of different sinks and tubs. Does the water turn the same direction (clockwise or counterclockwise) in each one? Can you make it go the other way by stirring? Explanation The water may have swirled clockwise down one...
Watch water swirl down the drains of different sin...
By Julie A. Swanson Art by Patrick Wayne Britten Want to experience something mind-boggling in the next few minutes? Give a strip of paper a half twist and tape its ends together. You have just made a Möbius (MUH-bee-us) strip, a fascinating object...
By Julie A. Swanson Art by Patrick Wayne Britten ...
Once upon a time, a man named Ghanbar lived. He had only one camel. He carried goods with his camel. He bought cotton and silk from one city and sold them in another city. Then he bought clothes and carpets from that city and sold them in another cit...
Once upon a time, a man named Ghanbar lived. He ha...
by : Mike Krath It was a windy day. The mailman barely made it to the front door. When the door opened, Mrs. Pennington said, "hello", but, before she had a real chance to say "thank you", the mail blew out of the mailman’s hands, into the house and ...
by : Mike Krath It was a windy day. The mailman ba...
How does a camera change a big scene into a small picture? To see for yourself, make a pinhole "camera." Start with an empty cardboard box. A round oatmeal box works well. Punch a hole in the center of the bottom by pushing a pencil through it. Now p...
How does a camera change a big scene into a small ...
One basic idea makes pinwheels and windmills work: the turbine. Here's how to make a simple one. With scissors, cut a square out of a piece of thin cardboard. A piece from an index card or an empty box of tissues works well. The size is not important...
One basic idea makes pinwheels and windmills work:...
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 peanut butter or cream cheese. Dip that finger and one other finger into a bowl of ice water. Feel a difference? How it ...
Do you know how Arctic seals, walruses, and sea li...
Set a glass and a large plate side by side on a counter. Pour ¼ cup of water into the glass and ¼ cup of water onto the plate. Over the next day, watch what happens to the water. Explanation: This activity shows the effect of evaporation. The water i...
Set a glass and a large plate side by side on a co...
A father had a family of sons who were perpetually quarreling among themselves. When he failed to heal their disputes by his exhortations, he determined to give them a practical illustration of the evils of disunion; and for this purpose he one day t...
A father had a family of sons who were perpetually...
It’s a phrase that my mother uses a lot. I used to wonder, “How in the world can Mother call them beautiful?” I am a logical, statistical man. I call things as I see them. I didn’t see beauty. My mother would tell people this with an enthusiasm they ...
It’s a phrase that my mother uses a lot. I used to...
As the dream of most parents I had acquired a MBBS degree and passed PLAB to enter UK, the land of braves and opportunity. When I arrived in the UK, it was as if a dream had come true. Here at last I was in the place where I wanted to be. I decided I...
As the dream of most parents I had acquired a MBBS...
A farmer had some puppies he needed to sell. He painted a sign advertising the pups and set about nailing it to a post on the edge of his yard. As he was driving the last nail into the post, he felt a tug on his overalls. He looked down into the Eyes...
A farmer had some puppies he needed to sell. He pa...
There was a man in Isfahan who used to beat his wife but unfortunately she succumbed to his beating though he had not intended to kill her. But when she was dead he became fearful of her relatives. In a state of anxiety he came out of his house and m...
There was a man in Isfahan who used to beat his wi...
There was no timetable nor a room designated for PRAYERS in the School. The School was ‘secular,’ hence prayers were not supposed to be allowed. After being interviewed and accepted by the school administration, the eager teaching prospect said in pr...
There was no timetable nor a room designated for P...
A story tells that two friends were walking through the desert. During some point of the journey they had an argument, and one friend slapped the other one in the face. The one who got slapped was hurt, but without saying anything, wrote in the sand:...
A story tells that two friends were walking throug...
Once there was a king who had presented his daughter, the princess, with a beautiful diamond necklace. The necklace was stolen and his people in the kingdom searched everywhere but could not find it. Some said a bird might have stolen it. The king th...
Once there was a king who had presented his daught...
An elderly carpenter was ready to retire. He told his employer-contractor of his plans to leave the house-building business to live a more leisurely life with his wife and enjoy his extended family. He would miss the paycheck each week, but he wanted...
An elderly carpenter was ready to retire. He told ...
A voyaging ship was wrecked during a storm at sea and only two of the men on it were able to swim to a small, desert like island. The two survivors, not knowing what else to do, agreed that they had no other recourse but to pray to God. However, to f...
A voyaging ship was wrecked during a storm at sea ...
There was a country long time ago where the people would change a king every year. The person who would become the king had to agree to a contract that he would be sent to an island after his one year of being a king. One king finished his term and i...
There was a country long time ago where the people...
Years ago a farmer owned land along the Atlantic seacoast. He constantly advertised for hired hands. Most people were reluctant to work on farms along the Atlantic. They dreaded the awful storms that raged across the ocean, wreaking havoc on the buil...
Years ago a farmer owned land along the Atlantic s...