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 TOPICS This page:   definitions    Search   Dr. Math See also the Internet Library:   dictionaries MIDDLE SCHOOL About Math Algebra    equations    factoring expressions    graphing equations Arithmetic    division    exponents    factorials    factoring numbers    fractions/percents    logarithms Definitions Geometry    2-dimensional      conic sections/        circles      triangles/polygons    3D and higher      polyhedra History/Biography Logic Measurement    calendars/      dates/time    temperature    terms/units Number Sense    factoring numbers    negative numbers    pi    prime numbers    square roots Probability Puzzles Ratio/Proportion Statistics Word Problems Browse Middle School Definitions Stars indicate particularly interesting answers or good places to begin browsing. Algebra Terms: 'Evaluate' and 'Simplify' [7/30/1996] What do the terms "evaluate" and "simplify" mean in expressions like "evaluate 3-{2-3(2-7)}" or "simplify -3x{7-(3x-5)}"? All About Functions [11/06/1996] Could you please explain functions? Are Negatives Factors of Other Numbers? [07/16/2003] Are negative numbers factors of other numbers? Is -3 a factor of 3? Is -3 a multiple of 3? Common Difference, Common Ratio [04/21/2003] Differences in arithmetic and geometric sequences. Definition of Ratio [08/21/2003] How is 'ratio' defined by mathematicians? Explementary Angles [05/29/2003] What do we call two angles that add up to 360 degrees? Finding the Next Number in a Sequence Given Its Geometric Mean ... Which Is a Square Root [09/24/2009] A student who knows how to calculate geometric means gets rattled when trying to determine a sequence from its square root geometric mean. Fraction Bar Name [12/14/1996] What is the name of the little line that separates the divisor from the dividend in a standard division question? Measurement: Precision vs. Accuracy [01/07/2003] Using a metric ruler student A measured the length of an object to the nearest tenth (0.1) of a centimeter, while student D measured its length to the nearest centimeter. Which measurement is more accurate? Millimeters, Inches, Feet, Miles [07/10/2003] The conversions given for millimeters to inches is 25.4, and for feet to miles is 5280. Are these numbers exact? Nomographs [06/12/2003] What are nomographs used for? How does one use them? Are they still in use? and last but not least, How are they constructed? The Number e [6/3/1996] Is "e" a number like Pi? How does "e" relate to continued fractions? On Polygons, Polygons within Polygons, and Definitions [07/22/2010] If we cut one polygon out of the interior of another, is the resulting shape a polygon? Doctor Peterson gives a curious student a better definition than he found in his book, pointing out the importance of separating polygons from their interiors -- and of experimenting with definitions. Percent vs. Percentage [08/17/2002] What's the difference between percent and percentage? What is a Quadratic Equation? [08/04/1997] What is a quadratic equation? What is it used for? How can we use it to solve everyday problems? What is Calculus? [05/06/1997] What is calculus and how does it work? What is Slope? [9/2/1996] What is a slope, and if given a slope = n equation, how do you apply that slope number to another graph problem? 2 Square Feet vs. 2 Feet Square [11/22/1998] What is the difference between 2 square feet and 2 feet square? Abbreviation of Ounce [04/27/2002] Why is the abbreviation for ounce oz.? Additive Identity and Other Properties [01/03/1999] Can you explain the identity of zero and the commutative and multiplicative properties? Why are they special? Adjacent Angles [09/19/2001] What is the definition of adjacent angles? Adjacent Primes [11/26/2001] What are adjacent primes? Age Classifications [08/24/2001] I'm trying to complete a table for age classes (octogenarian = 80s, nonagenarian = 90s, etc.). The Algebra of Complements and Supplements [01/25/1999] What are complements and supplements? How do you translate these concepts into algebra? Alternate Exterior Angles [06/03/2002] What is an 'alternate exterior angle'? Angles: Acute, Right, Obtuse, Reflex [06/06/2001] How can I remember what the names of angles mean? Are Angles Dimensionless? [08/31/2003] If you look at the dimensions in the equation arc length = r*theta, it appears that angles must be dimensionless. But this can't be right. Or can it? Arithmetic vs. Exponential Increases [05/06/1999] What does "....the work produced... will increase exponentially rather than arithmetically" mean? Associative, Distributive Properties [9/5/1996] Please explain the associative and distributive properties. Average [05/10/2001] Is it true that the average of a set of data is always computed by adding all the numbers together and dividing by the total number? Barycenter [08/30/1997] I need to know the definition of barycenter and how to find it. Basic Real Number Properties [07/31/1997] I need information about basic real number properties: associative, commutative, closure, identity, inverse, distributive. Benchmarks [03/25/2001] What is a benchmark? Could you please give me an example? Bits (Money) [02/26/2001] In the cheer: Two bits, four bits, six bits, a dollar; All for (school), Stand up and holler! what are bits? British Thermal Units [7/8/1996] What is the formula for converting BTU (British Thermal Units)? Can a Circle be a Polygon? [5/22/1996] Could a circle be considered a polygon with an infinite number of sides? Can a Rhombus Be a Square? [01/15/2004] General strategy to determine if one geometric shape definition also applies to another geometric figure. Can Negative Fractions Also Be Proper or Improper? [03/31/2004] Is a fraction like -3/4 considered a proper fraction? Is -8/3 considered an improper fraction? I've generally thought that all proper fractions lie between 0 and 1 on a number line, but how do the negatives fit in? Centimeters in a Hand [02/27/2002] You measure horses in "hands." I need to know how many centimeters are in 1 hand. Centroid, Circumcenter, Incenter, Orthocenter: Etymologies [01/20/2002] Why are the points centroid, circumcenter, orthocenter, and incenter named as they are, and are there any other special points associated with triangles? Page:  1  2  3  4  5  6  7  8  9 10 [next>]

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