First aid for sprains > Wrap some ice in a cloth and crush the ice with a hammer. Elevate > the sprained limb and apply the ice pack. Then wrap the cloth around > the ankle to hold the ice pack in...
Poisons
Poison ivy, oak, and sumac are three common and closely related plants that cause skin rashes. A child who spends a great deal of time in the woods and fields should know what these plants look like...
Broken Bones – Burns
Broken bones, also called fractures, are fairly common during childhood, particularly among boys. There are several types of fractures: - In a closed fracture, the broken bone does not cut through...
Accidents
In the United States alone, about 20,000 children under the age of 15 die each year because of accidents. That is more than the next three leading causes of death combined. One of your biggest jobs...
Water clocks and sand clocks
Measuring time by the sun or the stars is all very well, but people soon needed a better way. And this need led to the invention of the water clock. The first water clock was just a large clay or...
Sound gets around
A swimming fish seems to glide through the water without making a sound. But it doesn't swim as quietly as you think! Divers swimming underwater hear a loud crack when a large fish flips its tail and...
A water-drop lens
You can make a lens from anything that is curved and clear---even a drop of water. Here is an easy way to make a magnifying lens. Materials - cardboard - food wrap (clear plastic) - medicine...
Tricks with heat
These tricks aren't really magic---they just look mysterious. Heat energy makes them work. Water ballet Materials - crayons - ice-cube tray - mixing bowl (large) - paper - scissors - water ...
What makes a teakettle whistle?
You don't have to watch a whistling teakettle to know when the water is hot. The kettle will \"tell" you when the water begins to boil. The kettle makes a long, loud whistle. When you whistle, you...
How a thermometer works
Is a pool full of ice water warm enough for swimming? Not for you! But for a penguin, it might be just right. You and the penguin have different ideas about how \"warm" the water is. You can easily...