Drexel dragonThe Math ForumDonate to 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.

What is the Difference between a Metric and a Standard Ton? [3/28/1995]
A student has a question about units of weight.

What Skew Lines Are and Aren't [01/14/2004]
A description of skew lines including diagrams and definitions.

When is the expression Q.E.D. used? [02/15/1999]
More on Q.E.D.

Who Invented the Square Root? [12/11/1996]
I've only seen long, stringy roots!

Whole Numbers and Multiples [09/11/2001]
My students and I have been trying to figure out what numbers are in the set of "Whole Numbers." Is zero a whole number?

Why Cubed? [11/27/2001]
Why do we use "cubed" for the volume of a figure?

Why Does 1 Degree Equal 60 Minutes? [07/28/2004]
In 60 minutes, the minute hand of a clock makes a full circle, which is 360 degrees. How can 60 minutes equal 1 degree when measuring angles?

Why Do We Have Leap Year ? [02/25/1998]
Why do we need to have one extra day each 4 years?

Why Is a Circle 360 Degrees? [07/01/1998]
Why is a circle defined as 360 degrees?

Why is K Used as an Abbreviation for Area? [11/29/2004]
Many textbooks use the letter K to represent area in formulas, instead of A. Do you know why that is?

Why Isn't a Kilobyte 1,000 Bytes? [03/29/2001]
If the prefix kilo- means 1000, why is a kilobyte 1024 bytes instead of 1000 bytes?

Why Is 'Pound' Abbreviated 'lb'? [03/08/2004]
Why is "pound" abbreviated lb? Is it because of its Latin roots? I know libra means pound. What is the history of it?

Why is the Word "Number" Abbreviated to "No."? [05/13/2002]
Why is the word number abbreviated to no.?

Why Use Q and Z? [09/12/2001]
Why is the letter Q used for rational numbers and Z for integers?

Why Y Rises and X Runs [12/19/2012]
A teacher seeks an explanation for why slope is "rise over run" rather than "run over rise." Doctor Peterson reveals the logic, as well as a way to investigate these kinds of imponderables, before affirming her derivation from slope-intercept form and suggesting related motivations from other applications.

Wondrous Numbers [02/07/2001]
What is a wondrous number?

Word for a 225th Birthday [07/10/2001]
This year America is celebrating its 225th birthday. As we celebrated the bicentennial in 1976, is there a term for 225 years?

Zero and One, Each Unique in Its Own Special Way [04/10/2013]
Zero is neither positive nor negative; 1 is neither prime nor composite. So how do we classify these numbers?

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

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 

© 1994-2015 Drexel University. All rights reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.The Math Forum is a research and educational enterprise of the Drexel University School of Education.