Problem: Write an article based on this summary: Gather your materials. Allow your ribbons to dry.

Answer: Although you need more materials than you would if you used a simple curling ribbon, this procedure doesn't take that long to accomplish. Fabric ribbons that you've taken the time to curl can add something a little extra to a nice package.  Find a dowel stick (pencil or rod works, too) which you'll use to curl the ribbon around. A bigger diameter creates a bigger curl, while a smaller diameter creates a smaller curl. Get a length of fabric ribbon. The width doesn't particularly matter, it just depends on what you want in terms of width. Make it a few inches (or centimeters) longer than the final desired length because curling will make it smaller. Mix cornstarch and water in a spray bottle. Grab a couple clothespins or clips, or use tape. They have to be completely dry before you remove them from the dowel, because otherwise they may lose their shape. This can take awhile so it's a good idea to curl your ribbons with plenty of time to spare before you need to use them.


Problem: Write an article based on this summary: Understand what an inscribed square is. Recognize the relationship between the radius of the circle, and the side length of the square. Use the Pythagorean Theorem to find the side length of the square. Multiply the side length of the square by four to find the perimeter. Solve an example equation.

Answer: Inscribed shapes come up fairly often on standardized tests like the GMAT and GRE, so it is important to know what they are.  A square inscribed in a circle is a square that is drawn inside of the circle, so that all four vertices (corners) lie on the edge of the circle. The distance from the center of an inscribed square to each of its corners is equal to the radius of the circle.  To find the length of s, we must first imagine cutting the square in half diagonally to form two right triangles.  Each of these triangles will have equal sides a and b and hypotenuse c, which we know is equal to two times the radius of the circle, or 2r. The Pythagorean Theorem states that for any right triangle with sides a and b and hypotenuse c, a2 + b2 = c2.   Since sides a and b are equal (remember, we are still dealing with a square!) and we know that c = 2r, we can write out the equation and simplify the equation to find the side length as follows:   a2 + a2 = (2r)2, now simplify the expressions:  2a2 = 4r2, now divide both sides by 2:  a2 = 2r2, now take the square root of each side:  a = √(2r2) = √2r.  Our side length s for the inscribed square = √2r. In this case, the perimeter of the square P = 4√2r.  The perimeter of any square inscribed in a circle with radius r is defined as P = 5.657r! Consider a square inscribed in a circle with radius 10.  That means that the diagonal of this square = 2(10), or 20.  Using the Pythagorean Theorem, we know that 2a2 = 202, so 2a2 = 400.  Now divide both sides in half to find that a2 = 200.  Then take the square root of each side to find that a = 14.142.  Multiply this by 4, and you will find the perimeter of your square: P = 56.57. Notice that you could have found the same thing by simply multiplying the radius, 10, by 5.657.  10 * 5.567 = 56.57, but that might be hard to remember on a test, so it's better to memorize the process we used to get there.


Problem: Write an article based on this summary: Consider the context of the file. Ask the file's creator. Open the DAT file in a text editor. Look for information about the DAT file. Try opening the DAT file in a general program. Use trial-and-error.

Answer: You may be able to figure out which program you're supposed to use to open the file based on where the file is stored or what the file is named.  For example, if you found the DAT file inside of an "Adobe" folder, you can guess that an Adobe app is meant to open the DAT file. If the file is inside of a folder that contains other system files for your computer, it's probably best to leave the DAT file alone—it's probably used by your computer's built-in programs or features. If you received the DAT file as an email message or from a download site, try contacting the person who sent or uploaded the DAT file and asking what program they used to create the file. This is unlikely to yield much if you're asking on a crowded forum or a file-sharing site, but you should be able to get an answer out of a coworker or a friend via email. You may be able to use your computer's built-in text editor to view some (or all) of the DAT file's contents:   Windows — Open Notepad, then drag-and-drop the DAT file into the Notepad window.  Mac — Open TextEdit from your Mac's "Applications" folder, then drag-and-drop the DAT file into the TextEdit window. Depending on the DAT file, you may be able to see a line or two of text that determines the type of software used to open the file. Even if you don't see a line about the specific program you need to use, you might find a line that indicates the type of file (e.g., video or text) that the DAT contents are meant to be. Some programs—such as VLC Media Player, iTunes, Preview, and Notepad++—can be used to open a large number of file types without changing the files' contents. For example, VLC Media Player can open most video file extensions, while you can download and use Notepad++ on Windows to open virtually any text-based file. Unfortunately, if you haven't been able to determine the DAT file's origin program by this point, you'll have to start attempting to open the DAT file with different programs on your computer. You can do this by opening a program, dragging the DAT file onto the program's window, dropping it there, and waiting for the file to open.  If the file opens in a recognizable format, you've found the correct program. If the program displays the DAT file as an incomprehensible jumble of characters or refuses to open the file, your selected program isn't the right program.


Problem: Write an article based on this summary: Pick a song for which you want to make a video. Determine what kinds of pictures you want to include. Download all of the photos into a dedicated folder. Open a video editing program and import your song. Click and drag all of your photos onto the timeline next to the song. Divide the number of seconds in the song by the number of photos you have to determine how long each shot should be. Highlight all of your photos and set the length to fit your video. Save your final video as an MP4 or MOV file. Upload the video on YouTube.

Answer:
You need to have a copy of the song already on your computer in order to make your video. If you do not have the music file, you can buy it or download it online. Common pictures include album artwork, shots of the band playing music, hanging out, and at live shows, and images that relate to the words currently being sung. You can even choose to put lyrics up as they're sung in certain moments. There is no wrong series of pictures to put up, but you should think about what the song says to you and how you want to portray it.  The most popular videos have photos that fit seamlessly with the music being played. Think of a theme or story in advance that you want to tell. You can use pictures from your own life or those found online. Know, however, that it is illegal to profit off of someone else's work, so you cannot charge people for the music video unless the pictures and song are all your own. Make a folder labeled "Music Video" on your desktop. As you find photos, pull them into this folder. If everything is in the same place to begin with, your life will be much easier in the future. Good places to find photos include:  Stock photography sites. Your own collections. Online image searches. The musician's bio or photo page. You can use almost any video editing software you want, from Windows MovieMaker and iMovie, to Avid and Final Cut, as these videos are simple and can be handled by most software. You can even use the most recent version of Powerpoint on Open Office, which can save presentations as movies. Click and drag your song into the timeline to determine the length of your video. This process is slightly different for each program, but you should end up with each photo end to end on your editing timeline. The first shot should be lined up with the start of the song. Usually you can click and drag the files right from your folder into the editing program. If this doesn't work, try "File" → "Import," then find the photos. Click and drag them after importing into the video work station. To determine the number of seconds, simply multiply 60 by the number of minutes in the song, then add the leftover seconds. Therefore, a 2:40 long song would be 160 seconds long (60x2=120, + 40 = 160). Divide this number by your photos to determine the total length of each shot. For example, if you had 80 photos for a 160 second song, you'd need each photo to last for two seconds to fit the whole video. If you want some photos to go longer than others, you can simply use this as a guideline. Simply start with the appropriate number of seconds per photo, then adjust individual photos by hand. Click on all the photos by either dragging and highlighting, or Shift+Click. Right click on them and choose, "Set Length of Clips." Choose right amount of time for your video, depending on what you tested earlier.  It may not be labeled as "Set Length of Clips," but it will be similar. Some other possibilities are: "Duration," "Clip Length," or "Clip Timing." Some programs, like iMovie, let you change the duration of all stills, by default, in "Preferences." Simply set "Duration of Stills" to your desired length. Once you've finished your video, click on Save As or Export and choose and MP4 or MOV (Quicktime) file. These are the easiest to get onto YouTube, and they will not take up a lot of space on your computer. Exporting is when you take the video project and convert it into a full movie. If you don't get an option for MP4 under "Save As," you'll likely need to export. You'll need to make an account. From their you can click on "Upload" to put your video up on the internet for all to see. Choose a good thumbnail of the song or band to help viewers find you, and be sure to name the song and artist in the title. YouTube has strict copyright laws, and if you are not the rights owner of a song, there is a chance that your video will be taken down. You do, however, have a few strikes before losing YouTube privileges.