Problem: Article: Cup anemometers are relatively easy to make and are often used as an elementary school science project. This allows children to get an opportunity to learn about measuring wind speed by making their own device. To make an anemometer, you will need plastic cups, straws, a pencil, tape, and a push pin.  Position the straws in the shape of a cross and tape the middle. Then, staple the side of each cup to the end of one of the straws so they are parallel with the floor. Make sure all of the cups are facing in the same direction. Then, push a straight pin through the center of the straws and into an eraser on the end of a pencil. This will act as the axis. You should be able to blow on the cups so that they spin around in a circle. Use a coloured pencil and mark one of the cups. For example, you could put a red “x” on one of the cups. This will be the cup that is counted in order to determine how fast the cups rotate around an axis point each minute. You can either go outside and hold your device up in the wind, or you can use a fan to create airflow inside. To get a more accurate reading, make sure the airflow is not blocked by your body. Have another person count the number of times the marked cup spins around the axis in one minute. You can use a stopwatch to accurately time a minute. Record the number of times the cup spins on a piece of paper. For example, it may rotate 13 times in 1 minute.  You will need to complete this step four times in order to get enough data to calculate the average number of rotations per minute. For example, the next recording might be 15 times, followed by 12 times, followed by 17 times. Add up the numbers that you have recorded and then divide that number by four. This will give you the average number of rotations per minute.  For example, 13+15+12+17=57. Then divide that number by four (57/4=14.25) to get the average wind speed per minute. In this case, the speed is 14.25 rotations per minute.
Summary: Make an anemometer. Mark one of the cups. Hold the device in the wind. Count the amount of spins per minute. Calculate the average wind speed.

Problem: Article: Highlight the text in the box below by holding down your cursor in the top-left corner of the box, and dragging it to the bottom-right corner of the box so that all of the text is blue. Then, press "Command+C" on a Mac or "Ctrl+C" on a PC to copy the code the clipboard.
Summary: Copy the code below.

Problem: Article: If you're going to throw your knife away, bubble wrap is your best option. This safely coats the blade, preventing injury and accident during disposal.  You might want to wrap the knife in butcher paper first. Then, wrap the knife in a few layers of bubble wrap.  If necessary, wrap a layer of duct tape around the bubble wrap to keep it secure. You should consider adding an additional layer of cardboard when disposing of a knife. Place it in an old shoebox or other cardboard container before throwing it out. This may also be effective if you plan on donating the knife. If you do not have cardboard or bubble wrap, you can use newspaper, old clothes, socks, or any material you can easily wrap around the blade. Simply wrap the knife in a few layers of your chosen materials. If necessary, wrap some tape around the material to keep the knife in place.
Summary: Use bubble wrap. Try cardboard. Make use of other materials.

Problem: Article: Using a warm, wet cloth, take a few passes at the spot to get the worst of the mess out of the way. Because of the way carpet and fabric upholstery are made, much of the droppings will collect and harden at the top of the fibers, making the bulk of it easier to wipe away. Use pinching, pulling motions with the wet cloth to coax the droppings out of the carpet or upholstery. Depending on exactly what type of surface you’re cleaning and what materials it’s made of, you’ll want to purchase some special cleaner that is guaranteed to work safely on that surface. Most standard carpet cleaners or all-purpose household cleaners will be mild enough to work on any kind of carpet, and foaming upholstery cleaners can be found at any supermarket or drugstore. Spray enough cleaner onto the spot to cover what’s left of it. If you do not have any specialized carpet cleaner on hand, you also have the option of mixing up a gentle solution consisting of mild laundry detergent, vinegar and warm water. Give the cleaner two or three minutes to sit on the spot. The chemical compounds in the cleaner will begin to eat away the hardened stain, making it easy to wipe away later. Use a damp washcloth to go over the spot once again. The stain-fighting power of the cleaner combined with the force of scrubbing by hand should be enough to take the spot out of your carpet or upholstery. If any traces are left after scrubbing, spray a little more cleaner on the spot, let it sit, then make a second attempt.  Scrub forcefully to ensure that you get as much of the dried-on mess out of the deeper layers of the carpet as you can. Always wash any washcloth or towel that comes into contact with bird poop right away.
Summary:
Give the spot an initial go-over. Spray on some upholstery care or carpet cleaner. Let the cleaner start to work on the spot. Wipe away the remaining mess.