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Website
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: 8th Grade Logic

For Students 9th - 10th
Explains what conditional statements are in mathematical proofs, explaining an if then clause, be sure to read the second response to the initial question if this topic appeals to your curiosity.
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Website
National Council of Teachers of Mathematics

The Math Forum: Internet Mathematics Library

For Students 9th - 10th
This site provides links to other math sites specializing in probability and statistics.
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Lesson Plan
National Council of Teachers of Mathematics

The Math Forum: Prob/stat Classroom Materials

For Teachers 9th - 10th Standards
This site provides links to lesson plans, example problems, and software sites for probability and statistics.
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Handout
National Council of Teachers of Mathematics

The Math Forum: Pascal's Triangle and Combinations

For Students 9th - 10th Standards
This page gives a description of how to use Pascal's Triangle to determine the total number of possible combinations for a sample set. Also provides a helpful example.
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Activity
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: The Two Trains

For Students 9th - 10th
A detailed explanation on how long it will take two trains heading in opposite directions to meet.
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Website
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: High School Archive on Geometry

For Students 9th - 10th Standards
This site is an archive of questions posed by students and the general public about geometry which are responded to by "Dr. Math."
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Website
National Council of Teachers of Mathematics

The Math Forum: Student Center

For Students 9th - 10th
The Math Forum Student Center provides math news, notes, challenges, and much more. Dr. Math is here with the answers to students' math questions. There's a teachers' section, a research division, and a parents' part. This site also...
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Activity
National Council of Teachers of Mathematics

The Math Forum: Suzanne's Mathematics Lessons 2001

For Teachers 9th - 10th
This site by Suzanne Alejandre offers lesson plans, activities and resources covering topics in algebra, geometry, data analysis, number & operations, and measurement. The contents of this site are aligned with the NCTM standards and...
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Website
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: Faq About Proofs

For Students 9th - 10th Standards
This site provides links to questions sent in to Dr. Math about proofs. Topics covered include what proofs are, how to understand them, and how to build them, and much more. Be sure to click on the links which you believe may be helpful.
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Website
National Council of Teachers of Mathematics

The Math Forum: Internet News

For Students 9th - 10th
Dating back to 1996, you can catch up on the news in mathematics. This internet resource is weekly updated to keep you informed.
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Lesson Plan
National Council of Teachers of Mathematics

The Math Forum: Leonardo Da Vinci Activity

For Teachers 6th - 8th
At Math Forum, students explore the Vitruvian Man diagram and test Leonardo's theory of the ratio of height to arm span.
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Lesson Plan
National Council of Teachers of Mathematics

The Math Forum: Geometer's Sketch Pad Lessons

For Teachers 3rd - 8th
This site contains lessons using Geometer's Sketch Pad for elementary and middle school aged students.
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Lesson Plan
National Council of Teachers of Mathematics

The Math Forum: Lesson Plans: Fractions

For Teachers 3rd - 5th
Teachers, this is the place to come for fraction lesson plans if you teach elementary students. All the topics have a number of resources available from which to choose.
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Activity
National Council of Teachers of Mathematics

The Math Forum: Exploring Pascal's Triangle

For Students K - 1st
Every grade level can learn from Pascal's Triangle, and this site helps make it possible. There are explanations, examples, exercises and printable worksheets available.
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Activity
National Council of Teachers of Mathematics

The Math Forum: Beat the Calculator!

For Students 3rd - 8th
Find more than 500 "mental calculation tricks" that will help you square numbers, add, multiply divide, subtract, and find percentages. A great resource for advance math students, gifted children, and teachers wanting to find ideas for...
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Website
National Council of Teachers of Mathematics

The Math Forum: Teacher2 Teacher Ask a Question

For Teachers 9th - 10th
If you are a math teacher and have a concern about how to teach something to your student(s), would like some suggestions on what resources are available, or any other concern related to teaching mathematics come to this site to find an...
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Professional Doc
National Council of Teachers of Mathematics

The Math Forum: The Teachers' Lounge

For Teachers 9th - 10th
The Math Forum provides an online mathematics center for teachers.
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Activity
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: Contrapositive, Converse, Inverse

For Students 9th - 10th Standards
The inverse, converse and contrapositive are defined as Dr. Math answers a question to prove the validity of such statements for a specific problem. The Dr. explains the thinking process for the proof well.
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Activity
National Council of Teachers of Mathematics

The Math Forum: The Cylinder Problem: Elementary Lesson

For Teachers 3rd - 5th
Use this lesson plan to help students learn about cylinders. Students will be creating cylinders, and comparing them and their capacity. This engaging, hands-on lesson will hold student interest and be very beneficial to student learning.
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Activity
National Council of Teachers of Mathematics

The Math Forum: The Cylinder Problem: Middle School Lesson

For Teachers 6th - 8th Standards
This lesson offers an interesting, hands-on experience for middle school students studying cylinders. Students will create cylinders, and measure and compare their volumes.
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Graphic
National Council of Teachers of Mathematics

The Math Forum: Vectors and Points

For Students 9th - 10th Standards
Definition and description of vectors. Diagram included. This site only covers the most basic aspects of vectors.
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Website
National Council of Teachers of Mathematics

Nctm: National Council of Teachers of Mathematics

For Teachers 9th - 10th
The National Council of Teachers of Mathematics website contains a wealth of resources for teachers, students, and parents. NCTM standards, organizational information, conferences, publications, and online sources are highlighted.
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Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Tube Viewer Simulation

For Students 9th - 10th
A computer simulation of viewing through various lengths of tubes at different distances. The simulation also has an exploration of focus questions. [Requires Java.]
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Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Proof Without Words: Pythagorean Theorem

For Students 7th - 8th Standards
Students use this computer applet to visualize the Pythagorean Theorem.