Problem: Write an article based on this summary: Download an alphabet chart to practice Arabic letters. Study how letters change form. Listen to the alphabet spoken by native speakers. Familiarize yourself with vowel diacritics and other symbols.

Answer: You can download a basic printable chart at https://omniglot.com/charts/print/arabic.pdf and use it to study the Arabic alphabet. Spend about 20 minutes a day on a letter or two and you'll have the alphabet mastered in less than a month.  Stanford University has an interactive chart available at https://web.stanford.edu/dept/lc/arabic/alphabet/index.html that will help you learn how to write the letters properly. Visit http://www.arabic-studio.com/arabic-alphabet-course/ for a free online video course on the Arabic alphabet. Most letters of the Arabic alphabet change form depending on where they appear in a word. They may have a different form if they come at the beginning, middle, or end of a word. Many also have a different form if they appear on their own. Arabic Reading Course, available at http://arabicreadingcourse.com/index.html, is designed to help you recognize individual letters in words. The basic version is free and can also be used on mobile devices. If you pay for the premium version, you get additional flashcards and quizzes. To get the sounds of the letters right, try to mimic the sounds as pronounced by a native speaker. Since the sound may differ depending on the dialect of Arabic the person speaks, make sure you stay consistent with the dialect you plan to learn. You can watch and listen to a basic video introducing the Arabic alphabet and the sound each letter makes at https://youtu.be/53Nf8xVrN24. There are plenty of similar videos on YouTube that can also help you. Diacritics are used to mark short vowels. Although you'll commonly only see them in the Qu'ran, you may see them in children's books or language-learning books designed either for adults or children. Diacritics and other marks are designed to help you understand how to pronounce words in written Arabic or to distinguish similarly spelled words so you can tell them apart when you're just learning the language and may not completely understand the context.


Problem: Write an article based on this summary: Set up the formula for the slope of a line. Locate two points on the line. Calculate the vertical distance between the points. Calculate the horizontal distance between the points. Simplify if necessary.

Answer: The formula is slope=riserun{\displaystyle {\text{slope}}\;={\frac {\text{rise}}{\text{run}}}}. The rise is the vertical distance between two points on a line. The run is the horizontal distance between two points on a line. You can use two given points, or you can select any two points. It doesn’t matter how far apart or close together the two points are, but keep in mind that if the points are closer together, there will be less need to simplify the slope later. For example, you might choose the points (4, 4) and (12, 8). Start at one point, and count up in a straight line, until you reach the height of the second point. This is the rise of your slope.  Your rise will be negative if you start with the higher point and move down to the lower point. For example, beginning at the point (4, 4), you would count up 4 positions to point (12, 8). So, the rise of your slope is 4: slope=4run{\displaystyle {\text{slope}}\;={\frac {4}{\text{run}}}}. Start at the same point you started at when calculating the run. Count across in a straight line, until you reach the length of the second point. This is the run of your slope.  Your run will be negative if you start with the point on the right and move over to the left. For example, beginning at the point (4, 4), you would count over 8 positions to point (12, 8). So, the run of your slope is 8: slope=48{\displaystyle {\text{slope}}\;={\frac {4}{8}}}. You would simplify the slope just as you would  simplify any fraction.  For example, 4 and 8 are both divisible by 4, so the slope 48{\displaystyle {\frac {4}{8}}} simplifies to 12{\displaystyle {\frac {1}{2}}}. Note that it is a positive slope, so the line moves up to the right.


Problem: Write an article based on this summary: Encourage the flower blooming for the holiday season by lowering the temperature. Keep the plant in a dark room during the night. When you see flower buds forming, increase light and humidity.

Answer: The key to getting Christmas cactus to flower during the holiday season is proper light exposure, correct temperatures and limited watering. If you manipulate these things yourself, you can time a bloom just how you'd like.  Because this plant is thermo-photoperiodic, it will set buds when day length is about equal to night length and when the temperature drops to 50 to 60 degrees F for several weeks. If the temperature drops further, the plant will not bloom. From September and October, the Christmas Cactus should be kept in a cool room where temperatures will remain around 50-55°F (10-12°C), give or take a few degrees. Don't expose the plant to freezing temperatures.  Plants should be blooming for the holidays if cool treatments are started by early November. During the fall months, the Christmas Cactus should be placed in a spot where it receives indirect, bright light during the daylight hours but total darkness at night – it requires long, uninterrupted dark periods of about 12 hours or more.  Begin the dark treatments in about mid-October to have plants in full bloom by the holidays. Place the plants in a dark area from about 12 or more hours each night for 6-8 weeks or until you see buds forming. A closet or unused bathroom are ideal places. Be especially careful with watering at this time. Reduce the watering slightly. Do not soak the soil after a dry period; only moisten the top few inches, since buds, flowers and even leaves can fall off if the roots are suddenly saturated. The "dark ages" are over when your plant starts budding. At this point, you should increase, humidity, light, water (not too much, of course), and the temperature. In other words, continue as you were a few months ago. If the buds form too early, you can lower the temperature to stunt them. When you're ready, up the temperature and they should resume their progress.


Problem: Write an article based on this summary: Insert your new valve. Slide the metal clip back into place. Turn on the water supply. Put the trim plate and handle back in place.

Answer:
Grip the end of the new valve cartridge (which should be identical to the old cartridge) with pliers and slide it back into its slot in the wall. Wiggle the cartridge back and forth if at any point it gets stuck and won't slide any further.  If your valve cartridge will not slide into the wall or seems too small for the slot, you may have bought the wrong size. Double-check the valve size and model to make sure it matches your old cartridge. If you notice severe rust and corrosion while changing the shower valve, then you may need to change out the entire tub and shower valve assembly. Using your needlenose pliers, pick up the new valve's metal clip and insert it into place. It should fit in the same spot as the old valve's metal clip and be inserted from the top. If you tightened the water stops, loosen them by turning or screwing them to the right. Turn on the water supply to the entire house if you turned off the entire water supply because you couldn't locate the stops. Set the trim plate back over the access hole and screw it in place on both sides. If it had a layer of calk securing it around the sides, apply a new layer. Screw the shower handle back in place, turn it on to make sure it works, and remove the cloth from the drain. If you enlarged the wall opening earlier, you should be able to put everything back in place so long as the hole is not larger than the trim plate. Fill the hole back in if you accidentally made it too large.