In one sentence, describe what the following article is about: It's the yellow icon with a white ghost. Videos can last up to 10 seconds. If you haven't turned on filters, tap Enable Filters to access the special effects. The snail plays your video in slow motion, while the rabbit speeds it up. The three backwards arrows plays your video in reverse. Some filters change the color or brightness of the screen. Other filters add effects such as your current speed, location, or time. Some filters, such as the snail and rabbit, cannot be combined. It's the white right-pointing arrow at the bottom right of the screen.
Summary: Open Snapchat. Tap and hold the large circle icon to take a video. Release your finger when your video is complete. Swipe right or left to add special effects. Hold one finger down and swipe another to combine filters. Tap the "Send" icon. Tap on a recipient. Tap the "Send" icon again.

In one sentence, describe what the following article is about: Before you begin to study for an exam, you need to have taken good notes in class. Listen to what your teacher says closely. Many times, teachers will drop clues to what will be covered on the test. These hints can range from going over the information multiple times, using words like "important" or "key" when covering an idea, to even saying, "This will be on the exam." Write down everything you think is important. The more you write down during class, the better prepared you will be for the test. Review your notes each day. Don't cram. Waiting until the night before an exam only hurts you. Cramming will sometimes give you a passing grade, but it is not an effective, reliable study method. Students who study consistently, but in shorter amounts of time, do better in school. To avoid cramming, read your notes daily so you learn the information as you go along. Even if the teacher gives you one, make your own outline for the information covered on the test. Include the main concepts and ideas that will be covered on the test. Include examples, definitions, formulas, and other pertinent information. Make your own questions to test yourself. If you know there will be an essay on the test, then come up with essay questions and answers. Study with another student in the class and ask each other questions about the material. Make flashcards. Place definitions, concepts, themes, dates, and formulas on flashcards to quiz yourself. Reword concepts on your study guide. Many teachers ask information in different ways to see how well your synthesis of the material is. Think of other ways questions might be asked or another way a concept could be presented on the exam. You should never ignore the information until the date of the exam. You should review the information daily and weekly to begin committing it to memory and begin fully understanding the information. As the exam date approaches, allot more time for studying that subject. You may need some additional time to brush up on certain ideas or do a more comprehensive look at the material. Don't wait until the last minute to study for a test. When you know a test is coming up, start studying for it a week before the exam date. Don't wait on the teacher to give you a study guide to begin studying. Reread the chapter, review your notes, learn definitions and formulas. Don't stay up all night before an exam. If you are tired, you will not do well. Get a good night's sleep, eat a nutritious breakfast and lunch, and come to class early. Coming to class on time also ensures that you are not late to the exam. If the teacher gives any tips, flash reviews, or provides additional information, you will be in class to hear it. A common mistake students make is not reading the instructions or the questions carefully, and then making errors on the test. Take your time as you take the test. Read the directions for each section, then read each question. Ask your teacher if you are unclear about a question on the test. When you take a test, you neither want to rush or work too slow. Think about how long you have to finish, the number of questions, and the types of questions. You may want to tackle difficult or long sections first. If an essay is worth 1/4 of your overall test grade, you might want to write that first. Another strategy is to answer easy questions, saving questions you are unsure about for last. Many times, our initial impressions are correct, but then we second-guess ourselves until we write down the wrong answer. If you have a gut reaction to a question, then trust that instinct.
Summary: Take good notes. Make your own study guide. Make time for studying. Start reviewing a week before the test. Get plenty of rest. Read the questions carefully. Pace yourself. Trust your instinct.

In one sentence, describe what the following article is about: Show up early to the race and try to do a lap around the course. That way, you'll be familiar with all of the turns, hills, and terrain and can better prepare. Familiarizing yourself with the course will also make it easier to plan how you're going to pace yourself. A proper warm-up is crucial for getting your body ready for the race and preventing injuries. Before the race starts, go for a slow 10-15 minute jog to warm up your muscles. Then, do some dynamic stretches. Dynamic stretches are stretches that bring your joints and muscles through their full range of motion, and they're better at getting your body warmed up than static stretches. Some dynamic stretches you can try are: Walking lunges: step forward and bend your knee until your thigh is parallel with the ground and your opposite knee is just above the ground. Then, stand back up and repeat with your opposite leg. Repeat 10 times. Leg swings: hold onto something sturdy and swing one of your legs back and forth 20 times. Have each swing get bigger as you go until you're using your full range of motion. Then, repeat with your other leg. Settle into the pace you've been training for and stick with it throughout the beginning and middle of the race. If you start out too fast, you're more likely to lose steam and burn out later on in the race. You can always increase your pace as needed to pass people. By maintaining a steady pace, you'll have more energy for the moments when you need to push yourself to run a little faster. Hills can slow runners down in a race, and if you know how to run up and down them to maximize your speed, it can give you a competitive edge. When you're approaching a hill, increase your speed so you have more momentum going up it and don't get slowed down. When you're going down a hill, don't slow yourself down. Lean into the downward momentum to take advantage of it and come off the hill at a faster speed. Hills are a good opportunity to pass people during a race. During the last 1 mile (1.6km) of the race, increase your speed as much as you can. This is your last opportunity to pass people or maintain your position in the front. New cross country runners tend to start out fast and then lose steam by the end of the race. By maintaining a steady, manageable pace at the beginning of the race, you'll have more energy to push yourself in the final stretch and pass your competitors.
Summary:
Walk the course beforehand if you're able to. Warm up before the race. Run at an even pace throughout most of the race. Use hills on the course to your advantage. Push yourself during the final stretch.