National Council of Teachers of Mathematics
The Math Forum: Urban Systemic Initiative/oceans of Data
This site includes questions related to reading and understanding graphs. There are links on this site to lesson plans, benchmarks, and other webpages all of which mostly center about probability and statistics.
National Council of Teachers of Mathematics
The Math Forum: How to Make a Bar Graph
Site contains specific directions for making bar graphs using a Claris Works spreadsheet file.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math; Introduction to Probability
A good introduction to concepts in probability, this page also gives a great definition of sample space. Scroll down halfway to find sample space.
National Council of Teachers of Mathematics
The Math Forum: Geometry Turned On
This Math Forum site contains many mathematical and geometric explanations and proofs of many different topics that have been done using a geometry software called Geometer's Sketchpad. The explanations are very detailed and clear;...
National Council of Teachers of Mathematics
The Math Forum: Factoring by Grouping
Dr. Math at Drexel University's Math Forum describes the steps involved in factoring by grouping.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Using a Protractor
Q and A Math Forum site that answers the question of "How do I measure angles using a protractor?"
National Council of Teachers of Mathematics
The Math Forum: Perspective Drawing
This site discusses vanishing point and perspective drawing, including tips on drawing from various perspectives.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: The Monty Hall Problem
This page gives an example of a probability problem and explains it very thoroughly.
National Council of Teachers of Mathematics
The Math Forum: Pascal and Fermat Beginnings of Probability
This site describes early applications of probability, the roles of Pascal and Fermat, and the problem of points.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Constructing an Ellipse
Dr. Math, in a reply to a student question, mentions how you can construct an ellipse using string and thumbtacks.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Deriving the Hyperbola Formula
Dr. Math tackles a question about deriving the formula for a hyperbola posed by a student.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Calculating Surface Area of an Ellipsoid
Dr. Math, in a reply to a student question, discusses how to calculate the surface area of an ellipsoid.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Volume of Cube, Tent
This is a question/response site with the topic of volume. A student asks for help finding the volume of a tent, a cube, and other regularly dimensioned objects.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Polyhedra Classification
This question and answer site provides a lot of basic information about polyhedra. The five regular polyhedra, "The Platonic Solids," are described.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Surface Area and Volume:prisms
This site from the Drexel University is a detailed explanation of area and volume for those who have trouble with the concept and need an explanation of how they are related and their differences, and other basic concepts for a clear...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Naming Polygons and Polyhedra
This site gives you the prefixes for naming polygons and polyhedra.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Conical Sections
This question and answer site deals with finding the diameter of one end of a frustum of a cone when you know the diameter and angle of the end as well as the length of the cone.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Fibonacci Sequence
This site from the Math Forum explains the explicit formula for fibonacci numbers.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Degrees in a Circle
Dr. Math answers a students question as to why a circle contains 360 degrees.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Irrational Powers
Math Forum response considering whether an irrational number taken to an irrational power yields a rational or irrational number. Responses include a method of generating irrational #s x & y such that x^y is rational.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Rational and Irrational Number
Math Forum response to the size of the set of rational numbers. Responses investigate the countability of sets and basic set theory.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Rational Numbers
Math Forum response addressing how many elements are in the set of rational numbers. Responses investigate the countability of sets, and how sets with an infinite number of elements can be counted and compared to other "infinite sets."
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Rational / Irrational Numbers
Math Forum response providing methods to prove that between any two numbers there exist a rational and an irrational number.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Counting Rationals and Integer
Math Forum response providing a proof that there are as many rational numbers as integers.