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Title Brief Description Category Date
Find Sin, Cos, Tan, Cosec, Sec, and Cotan for any angle on the unit circle. Geometry 6/18/2014
Draw a polygon and then count the sum of its angles. Geometry 6/4/2014
Learn about the relationship between a polygon's inner angle and its number of sides. Geometry 11/29/2001
Explore the Pythagorean Theorem through regular polygons and circles on the sides of a right triangle. Geometry 9/18/2003
Explore triangles using Java Sketchpad Geometry 1/17/2000
Illustrates the effect of a given matrix on the unit circle. Geometry 3/5/2001
A collection of Java Sketches created in Geometer's Sketchpad and saved as Java Applets Geometry 2/26/2007
Learn about inscribing a regular polygon in a circle. Geometry 2/26/2002
Approximate the area of a circle using a grid. Geometry 4/1/2000
Create shapes with a virtual Geoboard. Geometry 9/21/2003
Produce up to 500 non-trivial Pythagorean Triples. Geometry 10/22/2001
Fold this piece of paper into a three dimensional pyramid. Geometry 7/29/2004
Fold this piece of paper into a three dimensional box. Geometry 8/3/2001
Applet that demonstrates foldings a piece of paper into a cylinder. Geometry 4/3/2009
A Java-based, online version of the Elements Geometry 4/7/1996
Shoot random points at a circle to approximate the value of Pi. Geometry 6/16/2014
Approximate the surface area for the Earth if its radius changed. Geometry 8/20/2000
Dazzle your students with this so-cool animated introductory exercise Geometry 10/22/1996
Fill a rectangular box with cubes. Geometry 4/20/2000
Graph points in the plane Geometry 11/1/2005
This lesson/unit allows an exploration into the ratio that designates a cancerous cell. Geometry, Geometry 12/22/1998
View Autocad files made by TCD students. Geometry 12/7/1999
Play with the perimeter of boxes. Geometry 3/27/2000
Graph a wide range of functions in 3 dimensions. (requires Java3D download) Geometry 6/17/2004


Title Brief Description Category Date
Learn all about fractals. Geometry
Roll dice and see the relationship between sides of a triangle. Geometry
Enjoyable activities involving geometric transformations and image distortion. Geometry
This activity includes an Excel file and a Java fileto experiment with interactive triangles. Geometry
A lesson that uses many options for studying tesselations Geometry
Find the temperature at a particularpoint of a rectangular plate using statistical methods. Geometry
Illustrates the intuitive notion of the tangent plane to a graph of a function of two variables. Geometry
This page offers a Java Program to Generate Pythagorean Triples. Geometry
Unit designed to teach surface area and volume Geometry
An Introductory Project in Trigonometry using The Geometer's Sketchpad Geometry
Supplementary material to help students with their first encounter with vectors. Geometry
This tool seems very effective for teaching Geometry at remotely located students. Geometry
A Fractals Lesson for Elementary and Middle School Students Geometry
Geometrically show the differences between 2 squares. a*a -b*b=(a-b)(a-b)*(a+b)(a+b) Geometry
A lesson to accompany the "Folding a Rectangular Prism" applet Geometry
This lesson deals with proportions, right triangles and the geometric mean Geometry

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