This worksheet works math masters though the concept of rise over run. They shade in the slope triangle that is created to help visualize the components. After a page of teaching the concept is a thoughtful exercise to give to your class...

This site contains lessons using Geometer's Sketch Pad for elementary and middle school aged students.

This site includes an interactive math tool to create drawings on isometric dot paper. You can draw figures using edges, faces, or cubes. Rotate and color your drawings, and view them in 3D or 2D.

Using an engaging approach, this lesson requires students to record the volume of cylinders as a function of the radius. Students will construct and measure the volume of several cylinders and then begin comparing these shapes.

"Why is any number raised to the zero power equal to one?" A good question and an even better answer

"What does it mean to have an imaginary exponent?" This site has an exceptional answer and explains it in two different ways

Curious as to what an ellipsoid is? Dr. Math provides a picture and a brief description. This site also has information pertaining to a torus, and spherical polygon.

Dr. Math, in a reply to a student question, discusses how to calculate the volume of an ellipsoid.

Dr. Math, in a reply to a student question, shows how to solve for the standard equation of a hyperbola.

This site uses calculus to explain how the formulas for finding the volume of a sphere and a pyramid were derived.

This site is a five part tutorial to get started using Geometer's Sketch Pad. The tutorial goes through things such as setting up to install GSP, the tool box, other functions, graphing,and more.

The interactive applet allows learners to explore the relationships between side length, area, and perimeter. Students see how changes in the scale factor influence the ratio of areas and perimeters. [Requires Java.]

Students use this computer applet to visualize the concept of completing the square.

Explore what the relationship the radius has to the area of a circle. Click the instructions to learn how to use this interactive resource and select"Exploration" for more ideas.

Dr. Math, in a reply to a student's question, describes how to obtain the equation of a parabola.

Dr. Math helps a student with the plotting and with finding the vertex and line of symmetry of a parabola.

Dr. Math, in a reply to a student's question, explains how to find the location of the vertex and focus, calculate the distance between the focus and vertex, as well as identify the axis of symmetry and the directix.

This site contains questions and answers regarding the Golden Ration and how the Fibonacci numbers relate to the ratio of lengths of golden rectangles. Related links are available at the end of the site.

Interactive tool creates patterns to cover the screen using regular polygons.

Need a pentagonal pyramid that's six inches tall? Or a number line that goes from -18 to 32 by 5's? You can create all those things and more.

This strategy game requires you to select cards with a specified sum before your opponent.

The Advanced Data Grapher can be used to analyze data with box plots, bubble graphs, scatterplots, histograms, and stem-and-leaf plots.

Information can be represented in many ways, and this application allows the user to represent data about the provinces and territories using colors.

Use this vertex-edge tool to create graphs and explore them. Investigate ideas such as planar graphs, complete graphs, minimum-cost spanning trees, and Euler and Hamiltonian paths.