Article: If you're like most people, you've been taught to learn by committing facts to memory. While knowing some key facts is important in economics, it's more important to understand how the models work. That means playing around with them on your own so you grasp the basics of the models, as well as drawing pictures and diagrams to understand them better. Go through your notes and textbooks and identify the main ideas you need to tackle, as well as the subtopics you need to look at. Divide the time you have to study between these topics, so you have equal time for each. You may want to focus a bit more on what you don't understand as well. You know that cramming isn't the best way to study. You stress yourself out, and you don't learn the material properly. Instead of cramming the night before an exam, spread it out over weeks, spending a little time each day working on economics. Reinforcing the information daily will help to solidify it in your brain. When you sit down to study, work on the things you don't like as much first. That way, when you've been working for a few hours and have a bit less energy, you'll get to the stuff you enjoy more. Sometimes, going over the same material again and again can be a bit dull and dry. Plus, if you're not understanding it, reading the same bit of textbook over and over isn't likely to help. Instead, use online resources, such as video tutorials and reputable websites, to learn more about the subject. It will bring a breath of fresh air, and a different perspective may help you understand the subject better. If your teacher or professor provides a study guide, make sure you are using it. Often, the teacher will structure things on the study guide like they will be on the test, so go over it thoroughly. When taking the test, look at the directions and make sure you understand them before writing answers. Your teacher may want you to draw diagrams in a specific way, and you don't want to lose points if you aren't reading carefully.
Question: What is a summary of what this article is about?
Study by working through problems instead of memorizing. Look at the main ideas and subtopics you've covered. Work on economics a little each day. Tackle the tasks you find harder first. Use resources outside of your class to enhance your learning. Work through the study guide provided by your teacher. Read instructions carefully on the exam.
Article: The tonic in a key signature refers to the root note that the rest of the scale is based on. Tonic is important because any given set of sharps and flats could correspond either to a Major or Minor key.  The first note of a tonic note is often (but not always) the tonic note. If there is a chord that the rest of the composition appears built around, the tonic note is probably the root note of that chord.  The tonic note in C Major is C, for instance. This is especially important if there are no flats or sharps in the notation. Purely natural notation will either be keyed in C Major or A Minor. Look for patterns building around one of these two notes. Musical keys have chords that suit them. Look at the notation and identify the chords in use. Next, you can use a chord map to associate the chords with a key. Chord maps are a dictionary of the chords that apply to a given key. Identifying three or so chords should give you enough ammunition to figure out the key with a chord map. Chord maps outline the chords of each key clearly. For example, the chords in the key of C are: C Major, D Minor, E Minor, F Major, G Major, and A Minor. The Circle of Fifths is a shorthand way of remembering the sharps and flats in a given Major key. In many ways, it's the most important tool in Western music theory. To know how many sharps there are in a key, count the number of spaces between a note clockwise from C. C is at the top of the Circle of Fifths, making it easy to count. Take the number of sharps and count it clockwise. The pace you stop at will be your Major key.  For flats, do the opposite with E, located at the bottom of the Circle. Count counter-clockwise from E based on how many flats are in your key signature. The Circle of Fifths is designed for Major keys. A Minor key will use the same accidentals, except the tonic note will be three steps down from the Major. In many cases, the final note in a song will bring the composition back to its root tonic note. Many composers will end with a tonic note to give their work a sense of completion. Cross-reference the final note with the given sharps and flats and see if the accidentals line up with the note in question.  If the final note is a chord, look for the "root note", or lowest in the chord. This technique may not work if the music you're trying to decipher is experimental or avant-garde. Although a chord map and list of accidentals should give you all the answers you need, it nonetheless helps to play out the song. If there was any doubt whether a piece if Major or Minor, those confusions should be laid to rest when you hear the music aloud. Major keys are so-called because they sound "happy". Minor keys sound naturally sad in contrast.
Question: What is a summary of what this article is about?
Look for the tonic note. Spot the chords in use. Refer to the Circle of Fifths. Identify the final note in a song. Play a bit of the song.
Article: Commas can be used to connect two simple sentences and a coordinating conjunction (but, and, nor, or so, for example), while a semicolon cannot.  Example of correct usage: "I love my cat, but he drives me crazy." Example of incorrect usage: "I love my cat; but he drives me crazy." A comma can never be used to separate two independent clauses (complete sentences). This is called a comma splice and should be avoided at all times.  Example of correct usage: "My kitty is cute; he loves to cuddle." Example of incorrect usage: "My kitty is cute, he loves to cuddle."
Question: What is a summary of what this article is about?
Do not use a semicolon instead of a comma. Do not use a comma instead of a semi-colon.