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Circle, Secants
Students identify the secant segment of a circle. In this geometry instructional activity, students investigate secant lines formed outside the circle. They use Cabri software to create drawings and explore circles and secants.
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Exploring Chords: Products of Chord Segments
Learners identify the properties of chords. In this geometry lesson, students multiply chord segments to find the solution to their problem. They construct two chords that cross on a circles.
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Product of Chord Segments
Students creating chords intersection using circles. In this geometry lesson plan, students create visuals of chords ad their properties using Cabri technology. They measure the chords and explore the relationship among chords.
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Investigating Quadrilaterals
Fourth graders discuss the various attributes of quadrilaterals. In groups, they use the attributes to sort quadrilaterals into different classes and a hierarchy. They review the new vocabulary and attributes with a partner to end the...
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Incredible Edible Bridges
Students create a bridge using engineering and geometric concepts. In this geometry lesson plan, students identify the missing measures of polygons sides and angles. They work together to solve real life situation using problem solving...
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Play Dough Day
Twelfth graders build a model of the following figures with the base from column I and the cross-section from column II. Draw the base with labeled axes on the graph paper and construct the figure on top of the base with the play dough...
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Investigating Pythagorean Triples
Students investigate and solve Pythagorean triples. For this geometry lesson, students find the missing sides and angles of a right triangle. They graph right triangles and move the sides around to create different angles.
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Investigating the Pythagorean Triples
Students investigate the Pythagorean triples. In this geometry lesson, students solve for different parts of a right triangle. They identify the missing side or angle using the pythagorean theorem.
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Identifying Lines of Symmetry
Students calculate the lines of symmetry using polygons. In this geometry lesson, students graph, compare and estimate using collected data. They identify different attributes to the polygons based on their sides.
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Does the Area of the Quadrilateral Change?
Seventh graders complete activities to further their understanding of area formulas. In this area lesson, 7th graders watch as the teacher uses Polystrips to model parallelograms. Students find the area of a rectangle and answer...
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Math Vocabulary Decoding Activity
In this math vocabulary worksheet, learners use a letter key code to match match vocabulary words to their definitions. A reference web site it given for additional activities.
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Math Vocabulary Maze
In this math maze worksheet, students navigate their way through a maze using clues and spelling out math vocabulary words. A reference web site is included for additional activities.
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Navy Sail Design
Students use the Pythagorean Theorem to explore sailboat design. In this Pythagorean Theorem lesson, two sides of a triangular sail are measured, and the theorem is used to calculate the third side. A worksheet, bulletin board design,...
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Technology Integrated Lesson
Young scholars investigate symmetry in the real world. In this geometry instructional activity, students inter-relate math and technology. They create and name a variety of polygons.
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Equilateral Triangles
Students examine the attribute of equilateral triangles. In this equilateral triangle lesson, students examine a number of paper triangles to determine how they are classified. They determine how triangles are depicted in Navajo rugs.
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Mother Nature Pattern Maker
Students in a teacher education program enhance their awareness of patterns. They discover how to support their students in developing this skill in mathematical terms. They role play the role of a K-2 student and collect images from...
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Hurricane Tracking
Students access the Internet to find information on current hurricanes. They get locations, speeds, and air pressures and then plot the location of the hurricane on a hurricane-tracking map. They also access the FEMA website to solve...
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Fractals
Students explore the concept of fractals. In this fractal lesson, students use applets to explore Koch's Snowflake, Sierpinski's Triangle, and other fractals. Students develop these concepts through exploration and teacher guided...
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Geo Jammin By Design: Coordinated
Students watch the teacher draw on the chalkboard and try to determine the form being drawn. They use questions to determine Quadrant #1 of a coordinate plane.
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Bountiful Butterflies
First graders create a symmetrical butterfly after reading "The Very Hungry Caterpillar" by Eric Carle. They fold a piece of fingerpaint paper in half to create a crease and after paint has been added , they refold and open their...
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Geo Jammin' By DeSign - Day 7, Lesson 36: DeSign Sampler
Second graders, in groups, write quilt reports.
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Math Vocabulary Review
In this math vocabulary learning exercise, students read a set of 15 math related definitions and write the words being defined. A reference web site is included for additional activities.
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Flying Geese
Students examine the Flying Geese quilt pattern, and discuss and identify the pattern. They write a paragraph titled, My Quilt Report, summarizing the information discussed about the quilt patterns.
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Fancy Names
Students examine various closed and open figures. They decide which letters have closed figures. Then they receive a pre-made name card and decorate every closed figure in their name.