Challenge your class to use straight lines when estimating the length of a curve. An engaging interactive allows individuals to place line segments one after another along the arc. Learners determine that the more lines used, the better...

The nth roots of unity all have a magnitude of one. Scholars use the unit circle and DeMoivre's Theorem to find the complex roots of one and discover that the complex numbers all lie on the unit circle and are equally spaced around it...

Determine the location of the pillars in time. Given a table of values for two parametric equations, pupils complete the table to determine the location and time it takes to build the pillars. Learners plot the points representing...

In this grade 3 math instructional activity, students complete a total of 10 questions that use a variety of grade 3 concepts. Page is part of a site with links. 

Apps for Arithmetic, Plane Geometry, and other Geometry concepts are provided.

Use this circle calculator to find the area, circumference, radius, or diameter of a circle. Given any one variable A, C, r or d of a circle you can calculate the other three unknowns.

Guide a mummy safely through the burial chambers of a pyramid as you solve length and area problems in basic to advanced geometry. There are four game zones that deal with circles and triangles, quadrilaterals, the Pythagorean Theorem,...

On this interactive site, students learn to identify squares, circles, and triangles.

Use this site to practice identifying shapes, colors, and animals with these interactive games.

Use this calculator to calculate physical values related to the shape of a stadium.