National Council of Teachers of Mathematics
Nctm: Illuminations: Igd: Area of a Rectangle
Use this interactive tool to learn how to find the area of a rectangle. Click on "Instructions" for details on how to use this tool. Click on "Explore" for more ideas.
National Council of Teachers of Mathematics
Nctm: Illuminations: Adjustable Spinner
An adjustable spinner to provide random spins of a computer based spinner for any mathematical experiment requiring random spins.
National Council of Teachers of Mathematics
Nctm: Figure This: Math Challenges for Families
Students, teachers, and parents alike will enjoy this challenging math site. It contains a clever brain teaser section plus creative problems related to algebra, geometry, measurement, numbers, statistics, and probability. A Spanish...
National Council of Teachers of Mathematics
Nctm: Illuminations: State Data Map
Data can be displayed in a variety of ways. This interactive map of the United States shows data by degrees of color. Choose to display data such as: land area, population, population density, gas use, and much more.
National Council of Teachers of Mathematics
Nctm: Standards for School Mathematics
This standards-based NCTM website offers resources for teachers of mathematics for all grade levels, including interactive math tools, lesson plans, online resources, and the like.
National Council of Teachers of Mathematics
The Math Forum: Geoboard Activities
Math Forum provides a set of links to sites that are related to geoboard activities. There are several great links to lessons using geoboards. The links provide insight into how to use them, including how to perform various measurements...
National Council of Teachers of Mathematics
Nctm: Illuminations: Isometric Drawing Tool
Create dynamic 2-D or 3-D drawings on isometric dot paper.
National Council of Teachers of Mathematics
Nctm: Illuminations: Axonometry: Applying Complex Numbers to Art
Axonometry is an illumination that has students discover relationships between complex numbers and graphing. Students make connections between algebraic and graphical representations of a complex number.
National Council of Teachers of Mathematics
Nctm: Figure This: Putt Putt
A Figure This math challenge asking students to use their knowledge of angles to determine how to make a hole-in-one on a putt-putt course. This challenge can be downloaded as a PDF or assigned electronically through Google Classroom or...
National Council of Teachers of Mathematics
Nctm: Illuminations: Grouping and Grazing
A game that reviews grouping in fives and tens, and adding and subtracting. The instuctions are clear and include a video of how to play.
National Council of Teachers of Mathematics
Nctm: Illuminations: Resources for Teaching Math: Algebra Tiles
Try this hands-on approach to solving algebra problems with this interactive website. Students are able to "solve equations, substitute in variable expressions, expand, and factor".
National Council of Teachers of Mathematics
Nctm: Illuminations: The Product Game
In the Product Game, students start with factors and multiply to find the product. There are four parts to this investigation.
National Council of Teachers of Mathematics
Nctm: Illuminations: Computing Pi
This resource investigates approximating the value of pi through the calculation of perimeters of inscribed or circumscribed polygons. The interactive tool allows learners to examine and compare both methods.
National Council of Teachers of Mathematics
Nctm: Illuminations: Shape Tool
This resource will help students better understand polygons. The shape tool allows users to create and manipulate different types of polygons.
National Council of Teachers of Mathematics
Nctm: Illuminations: 4.4 Developing Geometry Understandings With Tangrams
Students use this interactive website to explore tangrams by connecting the pieces.
National Council of Teachers of Mathematics
Nctm: Figure This: Math Challenges for Families
NCTM offers sections on Families & School, Families & Math, Families & Homework, and more. Has links to brain-teaser problems ranging in skill from very easy to challenging. Click Take a Challenge or Challenge Index for...
National Council of Teachers of Mathematics
Nctm: Illuminations: Volt Meter
As you put the different type of batteries on the volt meter pay attention to the voltage equations in the table. See how positive and negative numbers interact.
National Council of Teachers of Mathematics
The Math Forum: Elementary School Teacher's Place
The Math Forum provides lesson plan collections for elementary school teachers. Search the collection of lesson plans by scrolling down to the bottom of the page.
National Council of Teachers of Mathematics
The Math Forum: Middle School Teacher's Place
The Math Forum provides a collection of middle school math lesson plans. Search capability is offered at the bottom of the page.
National Council of Teachers of Mathematics
The Math Forum: Problem of the Week
Math Forum has a site for problem of the week for Elementary, Middle, and High School. Subject areas include Pre-Algebra, Algebra, Geometry, and Pre-Calculus. Go through the archives of past problems dating back to 2001.
National Council of Teachers of Mathematics
The Math Forum: Suzanne Alejandre: Algebraic Factoring
Use algebra tiles to explore factoring of polynomials.
National Council of Teachers of Mathematics
The Math Forum: Math Fundamentals Problem of the Week
Math Forum gives a fundamental math problem for students in general math to work on each week with the answer to the previous week's question available. An archive of weekly problems and solutions is provided as well.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Parabola Focal Point
Dr. Math discusses some of the "rules" of parabolas that are specific to the focal point.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Parabola Problems
Dr. Math tackles a problem about culverts. This is in response to question posed by a student.