| How to tackle word problems |
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1. Successfully completing science word problems requires good reading comprehension skills. Word problem solvers cannot effectively complete the word problem without understanding the problem itself. What information in the problem is important to solving an equation? What information can be discarded? Distance, time and speed are important quantities that would be listed in a problem about a car’s speed. The color of the car would have no impact in solving the problem. 2. Word problems are applications of algebraic expressions, or equations. Good word problem solvers distinguish between the givens in the problem and the value which is to be calculated. The givens always include both numbers and units. The value to be calculated only has a unit. The unit describes the measurement involved. 3. Successful word problem solvers see how the mathematical expressions in the statements are interconnected to each other. How would such a problem solver complete this example? 4. Successful problem solvers determine the appropriate algebraic expression, or equation, for the problem. The appropriate equation to use for the example is: distance equals speed multiplied by time, or mathematically, d = speed * t. Now the problem is mathematical in nature. By substituting 40 kilometers per hour for speed and 2 hours for time, the problem solver gets an answer of 80 kilometers. Note that the answer includes both a number and a unit. Sometimes the equation needs to be rewritten by applying algebraic rules, so the unknown quantity is on one side of the equals sign all by itself. 5. Successful problem solvers document their thinking process by writing out each step that he uses to solve the problem. The example above is rather basic, which most students can discover without writing out their work. Science word problems are also applications of science content. With more challenging science content, the corresponding word problems may, at first, seem too difficult. Breaking down the problem into simpler steps, which includes writing out the mathematical work, often helps create success. By writing down each given, unknown, equation, mathematical step, and answer, more challenging science word problems are less difficult. By first applying the problem solving process to basic problems, the successful problem solver will soon develop a method to apply to more difficult science word problems. You can help your children develop a successful process that they can use to solve word problems and become effective word problem solvers. First, understand the problem’s language content. Second, recognize that word problems are applications of algebra. Third, the quantities used in problems are interconnected. Fourth, decide upon the appropriate algebraic equation to solve each problem. Finally, document the problem solving process. [extracted from: http://www.articlesbase.com/k-12-education-articles/5-strategies-to-help-children-to-become-successful-word-problem-solvers-1271192.html]
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