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Browse Middle School Definitions
Stars indicate particularly interesting answers or
good places to begin browsing.
 Pareto and Bar Charts [3/12/1997]

What are three distinguishing differences between Pareto Charts and Bar
Charts?
 Parsec (pc) [10/26/2001]

One of the unit conversions my Casio fx991MS calculator does is pc to km
and km to pc. What does "pc" mean in this context?
 Parts of a Cone [04/18/2001]

Does a solid cone have any edges?
 Pattern or Sequence? [10/02/2003]

What is the difference between a pattern and a sequence?
 A Peck of Peppers [02/27/2002]

If Peter Piper picked a peck of pickled peppers, how many pickled peppers
did Peter Piper pick? How much is a peck?
 Pentagram [12/08/2001]

Is a fivepointed star on a flag a decagon? Or just five triangles?
 Percent Greater Than vs. Increased [11/22/2002]

Is there a difference between the following statements? My profits are
200% greater than they were last year; My profits from last year have
increased 200%.
 Percent Increase and "Increase by a Factor of ..." [08/01/2006]

If we start with 1 apple today and tomorrow have 2 apples, then we have
a 100 percent increase. But can't I also say there was an increase by a
factor of 2?
 Perfect Numbers [08/14/1997]

What is the highest perfect number that has been found? How many perfect
numbers are there? What are they?
 Perfect Square: Definition [10/24/1999]

What is a perfect square?
 Perimeter of an Oval [04/08/1999]

What is the perimeter of an oval called?
 pH Definition [10/20/2001]

What is the 'p' in pH?
 Phi [05/18/1997]

What is phi?
 Point Symmetry [08/19/2001]

What exactly is point symmetry? How can one tell if point symmetry is
present?
 Polygon Names [09/18/2001]

Why is a 3sided polygon called a triangle instead of a trigon? Why is a
4sided polygon called a quadrilateral instead of a tetragon, when all
the others are ___gons? Why is there not a single consistent term?
 Polyhedra: Classification, Theorem [02/12/1998]

I would like to know how polyhedrons are classified, which figures can be
used for the faces, and the theorem relating the faces, edges, and
vertices.
 Polyominoes [09/08/1997]

I am using polyominos, but I do not know how to tell my dad what they
are. How can I tell him so he will know?
 Polyominos [08/11/1999]

What is the definition of a polyomino?
 The Pound Sign [04/06/2001]

Can the # symbol be used to represent the weight unit 'pounds'?
 Power or Exponent? [10/14/2003]

I always thought that 'power' was just a synonym for 'exponent'. Is
that incorrect?
 Prime Numbers [01/31/1997]

What are the prime numbers and why are they prime numbers?
 Prime Numbers vs. Prime Factors [01/13/1997]

What is the difference between a prime number and a prime factor?
 Principal Square Root Positive [10/24/2002]

Why are we always taught that the principal square root of a number is
positive?
 Profit Margin and Percentage Markup [02/16/2007]

I own a small business and am a little confused about the difference
between a percentage markup and a profit margin. Are they the same
thing? If not, how are they different?
 Pronumerals [05/14/2002]

What is a 'pronumeral'?
 Pronunciation of Fractions [03/28/1997]

How do you pronounce fractions with 32, 42... in the denominator...?
 Proofs with Isosceles Triangles [10/28/1998]

What are altitudes, angle bisectors, and medians? How do you prove that
in an isoseles triangle, the altitude is a median and an angle bisector?
 Proportionality Symbol [05/20/2003]

Do you know the name of the little symbol used in the topic of rates
and variation that means 'in proportion to'?
 Pyramid Corners [05/01/2001]

How many corners does a pyramid have? Is a corner the same thing as a
vertex?
 Pyramids and Triangular Prisms [05/09/2000]

What's the difference between a pyramid and a triangular prism?
 Quadrant [03/25/2001]

What is a quadrant?
 Quadratic Equation [7/10/1996]

Why is a quadratic equation "quadratic"?
 Quadratic Equations [12/3/1995]

My students want to know why an equation of the second degree is referred
to as a quadratic equation. What does the prefix quad have to do with
second degree equations?
 Quadrilateral Classification: Definition of a Trapezoid [01/15/1997]

What is the correct definition of a trapezoid, and why?
 Quadrilaterals [8/31/1995]

What is 4sided and has no equal angles?
 Range, Mean, Median, and Mode [11/17/1998]

Why do we study range, mean, median, and mode? How will these concepts
help me in real life?
 Ratios and Fractions: A Reconciliation [04/02/2013]

Teachers disagree about whether a fraction can compare part to part.
Doctor Peterson first distinguishes between ratios and fractions before reconciling them
and warning against inflexible thinking.
 Ray, Line Segment, Line [08/23/1997]

I need to know definitions for ray, line segment, and line.
 Rays and Angles [11/24/1997]

Do rays have an arrow on both ends, or is that an angle?
 Reciprocals [12/19/1996]

What is the use of reciprocals?
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