Use the alphabet as a tool for teaching your class about geometric figures. Break apart capital letters into line segments and arcs. Classify angles as right, acute, or obtuse. Identify parallel and perpendicular lines. An excellent...

Young mathematicians investigate the use of symmetry in graphic design. After first learning about reflection, translational, and rotational symmetry, children use this new knowledge to identify symmetry in letters of the...

Challenge your class to construct a definition for trapezoids. Looking at four examples and four non-examples, students individually create definitions and use them to classify an unknown shape. Allow for small group and whole-class...

How does a computer perform a search in order to find data? The lesson begins with a demonstration on finding one number out of 15. Pairs then play three games of Battleship by using different search techniques. The lesson...

What is the most efficient way to ensure everyone is connected? Individual pupils determine the least expensive route to pave roads in a fictional city. In doing so, they learn to find the minimal spanning tree for the situation. They...

Geometry is the study of how to use math to describe and investigate different points, lines and shapes. The way that a shape is described in geometry is with a formula, which is simply a mathematical way to calculate different...

This site from The Math Forum is a great site if you are looking for activities to engage your students in learning about line symmetry. Peruse this collection of activities for one or two or four that would be right for your students....

If you want to plant a class garden, this is a great resource for combining geometry, Native American studies, and rocks.

Study inscribed angles in semicircles and quarter-circles. What conjectures can you make about the measure of an inscribed angle in semi- or quarter-circles?

This step-by-step tutorial teaches students how to construct a bisector of a segment and the bisector of an angle.

This site provides a step-by-step method to construct congruent segments and angles with a straight edge and compass.

This step-by-step method teaches students to construct a perpendicular to a line through a point on--or off--the initial line using compass and straight edge.

Use this internet lesson to explore different types of symmetry in nature. Learners examine line symmetry, rotational symmetry, and bilateral symmetry. An integrated math, language art, and art lesson. Acrobat Reader required.

Students explore four types of angles in this interactive web lesson.

This step-by-step demonstration teaches students to construct a line parallel to another through a given point.

Students learn how to construct parallel and perpendicular lines. The resource consists of video demonstrations.

This interactive resource provides an example picture of the geometric figure chosen by students to review.

Archaeologists have just uncovered an ancient plate. They need your help to determine the original size of the plate. Try this challenge where you use concepts of symmetry and estimation to uncover the solution. An activity from the NCTM...

Students learn about reflection. An activity, examples, tricks, and a definition are included.