Students investigate the dimensions of a full-rigged ship and a schooner. Using the dimesions, they calculate and compare the area of the sails. In groups, they create model sails that require modeling and estiminating using the...

Students brainstorm what they know about geometric terms and patterns. They identify symmetry, shapes and congruency. They create a book of symmetry.

Learners analyze how the parts of a system go together and how these parts depend on each other. They comprehend the forces in terms of strength and direction. Students observe, measure and describe weather indicators.

Students examine new shape possibilities by combining two and four triangles using manipulatives.

Third graders read the story STREGA NONA together as a class and discuss what they know about pasta. They each receive pieces of pasta to glue down on construction paper and write beneath each one what they think it looks like.

Students stud angles, and then play the "What's Your Angle?" game. They complete at least 10 computer generated problems from the Angles Applet.

Fifth graders play a game in which they list as many environmental issues or terms in alphabetical order. They brainstorm ways they can save the environment and create a mural that displayed research found from the internet and Encarta.

Second graders use symmetry to create their own small quilt squares. They attach all of the squares to create a large class quilt.

There are many different ways to show a proof of the Pythagorean Theorem.  Here is a nice hands-on paper cutting activity that shows a graphic representation. You can even challenge your young Pythagoreans to come up with their own...

Students manipulate shapes to find multiple lines of symmetry. They use color to visualize the lines of symmetry.

In this math vocabulary worksheet, students choose which multiple choice answer best defines twenty-five mathematical terms. Students place their answers on the lines provided.

Learners explore the concept of polygon properties. In this polygon properties lesson, students draw polygons with different numbers of sides such as pentagons, octagons, hexagons, etc. Learners identify different geometric shapes in the...

Students explore the concept of patterns. In this patterns lesson, students use applets to manipulate tessellations. Students predict the next number in a sequence by recognizing patterns.

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

Students can use the TI-84 Plus family with Cabri Jr. to prove triangle congruence with SSA.

A complete reference guide to congruent triangles. It provides definitions, examples, and an interactive activity that enhances further explanation. Includes links to related topics.

This activity will help students visualize the construction of congruent triangles and conceptualize properties through measurement and movement of their construction. Students will need access to the TI-84 Plus Family.

Students construct and analyze triangles that are congruent by ASA.

Construct parallel lines in Cabri Jr., and students label and check if all corresponding angles are congruent.

This activity will help students visualize the relationships that arise when some of the congruence conditions are true but one is not. The interactive nature of their constructions will permit them to explore these relationships in a...

[Free Registration/Login Required] This flipchart provides the basic step-by-step guidance for making congruent constructions using a compass and a ruler.

On this one page website sharpen your logic, triangle properties, and pattern recognition skills while working on this challenge. The solution is available to double check your solution.

The goal of this task is to apply knowledge about similar triangles in order to understand an origami construction: trisection of the side of a square. Aligns with G-SRT.B.5.

In this lesson, students learn to inscribe regular polygons inside a circle.