The Math Forum

Ask Dr. Math

Middle School Archive

Dr. Math Home || Elementary || Middle School || High School || College || Dr. Math FAQ

This page:
  definitions checkmark

  Dr. Math

See also the
Internet Library:


About Math

   factoring expressions
   graphing equations

   factoring numbers


     conic sections/
   3D and higher



Number Sense
   factoring numbers
   negative numbers
   prime numbers
   square roots

Word Problems

Browse Middle School Definitions

Stars indicate particularly interesting answers or good places to begin browsing.

Translation, Reflection, Rotation [05/16/2001]
What is the difference between slide, flip, and turn?

Transversal - Meaning and Examples [11/14/1994]
I have a 7th grade student who would like to know the meaning and examples of "transversal".

Triangle Inequality Theorem [03/09/2001]
The lengths of the sides of a non-isosceles triangle, in size order, are 5, x, and 15. What are all possible integral values of x?

Trilogy, Tetralogy... [05/28/2003]
Why isn't there a numbering system for groups like trilogies?

Truncating [01/19/2002]
What does truncating mean?

Types of Triangles [02/24/2003]
What is the the difference between equilateral, isosceles, and scalene triangles? How can I remember which name goes with which triangle?

Using Mean, Mode, and Range [11/23/2002]
Examples of real-life uses of mean, mode, and range.

Vertical Angle [11/15/2001]
What are vertical angles? Are they equal?

Vertical Angles [10/27/1996]
What are vertical angles?

Volume vs. Capacity [05/01/2002]
Can you explain the difference between the terms volume and capacity? Also mass and weight.

Ways to Remember the Meaning of Circumference, Radius, Diameter, and Chord [03/18/2004]
If the minute hand touched the edge of the clock, would it be most like a diameter, radius, circumference, or chord of a circle? I have a hard time remembering what each of those means.

What are Flops? [02/25/2001]
What are flops, as relating to computers?

What Are Proofs? [08/12/1997]
I am homeschooling and do not understand proofs. Can you help me out?

What Does a Twofold Increase Mean? [01/23/2004]
Is a twofold increase simply twice the amount? What about a threefold increase? I'm not used to this terminology of using 'fold.' Does it refer to powers or multiples?

What Does Average Mean? [12/05/2001]
Can someone explain what average is? For example what is the average rainfall in New York? I understand the formula needed to find the average, but what is the meaning of average?

What Does a Vertical Bar Mean? [01/29/2001]
I want to know what the symbol | means, for example |2+3|.

What Does EE Stand For? [01/14/2003]
What does the EE stand for on a scientific calculator?

What Does "Mean" Mean? [4/14/1995]
Can the terms average and mean be used interchangeably?

What Does 'n' Mean? [09/25/2001]
In a pair of numbers, if n is the first number, what is the second?

What Do Input and Output Mean in Math? [04/09/2007]
What is the relationship between the input and output on a table? I'm not quite sure what an input or output is.

What Is a Coefficient? [01/29/2004]
What is a coefficient?

What is a Cubit? [03/31/2002]
The Bible says that Moses was 9 cubits tall and Pharaoh was 1 cubit tall. What is that in today's inches or feet?

What is a Cuboctahedron? [01/02/2001]
What is a cuboctahedron?

What is a Median? [03/03/1998]
A definition of median, and four examples of calculating medians.

What is an Algorithm? [08/08/1997]
I have been reading up on computers and microprocessors. The word algorithm keeps coming up. Can you give me any hints about this?

What is an N-gon? [06/01/1998]
Can you explain the statement: "In an N-gon, n-3 diagonals can be drawn from one vertex"?

What is a Pace? [02/28/2002]
What is the difference between a "pace" and the standard unit of measurement?

What is a Parenthesis? [07/17/2000]
What does the mathematical term "parenthesis" mean?

What is a point? [8/26/1996]
Define a point, please.

What is a Set? [04/04/1997]
What is the correct term to refer to groups of objects like 3 cars, 7 pencils, or 5 apples?

What is a Sign? [04/21/2003]
Can you do anything in math without signs?

What is a Significant Digit? [12/25/2001]
I came across a question asking for an answer with no more than "2 significant digits" - can you please explain what a significant digit is?

What is a slide rule? [07/27/1997]
What does a slide rule do and how does it work?

What is a Stone? [11/11/2001]
Can you tell me what a stone in English measurement is equal to in pounds?

What is a tessellation? [01/20/1997]
Can you give an example?

What Is a Theorem and Why Are They Important? [08/15/1997]
I don't understand how theorems help us learn.

What is a Torus? [11/30/1999]
Is there a good way to describe a torus to a child?

What is a Vertex? [12/06/2001]
And what does vertices mean?

What is Circumference? [06/25/2001]
My friend told me it's somewhat like the measurement of the outside of a circle, but I don't understand that.

What is Denary? [06/07/1999]
Could you please give me two examples of denary?

Page: [<prev]  1  2  3  4  5  6  7  8  9 10 [next>]

Search the Dr. Math Library:

Search: entire archive just Middle School Definitions

Find items containing (put spaces between keywords):
Click only once for faster results:

[ Choose "whole words" when searching for a word like age.]

all keywords, in any order at least one, that exact phrase
parts of words whole words

[Privacy Policy] [Terms of Use]

Home || The Math Library || Quick Reference || Search || Help 

© 1994- The Math Forum at NCTM. All rights reserved.