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Curated OER
Geometric Pictures of One Half
A learning task that involves creative ways of thinking permits children to use paper models as a way to visualize the fraction one-half. Learners can fold or cut their models in such a way that the unshaded regions, and shaded...
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Simply Symmetry
Students are introduced to the concept of symmetry by examining different shapes and folding them into equal halves. They work in small groups focusing on finding the lines of symmetry of one specific shape. A symmetry booklet is made by...
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Octagon Lesson Plan
Learners investigate octagons using words and shapes. In this geometry lesson, students discuss the shape of an octagon using physical and symbolic models. They make conjecture about the shape and relate it to the real world.
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Rotations in the Plane
Pupils investigate the properties of a rotation as they use technology (Cabri, Jr.) to observe the relationship between the pre-image and the image formed by the rotation. The lesson provides ample opportunity for learners to conjecture...
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Build a Weather Vane
Third graders measure wind direction. In this weather lesson, 3rd graders build a weather vane from a straw, skewer, spool, and flag. Students measure wind direction using their weather vane.
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The Overlooked Regular Pentagon
Tenth graders discuss the history of geometry as it relates to pentagons. In this geometry lesson plan, 10th graders solve problems of a pentagon inscribed inside of a circle using ratio. They review other properties for shapes of...
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Angle Exploration and Classification
Students compare and contrast angles and identify them as acute, obtuse, right, or straight angles. They create rays and angles using uncooked spaghetti, read and discuss key vocabulary terms, and complete a variety of geometry worksheets.
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Math Challenge
Learners challenge their math knowledge through a series of lessons designed to engage critical thinking and reasoning skills. In these problem solving lessons, students work with the Pythagorean Theorem, time zones in different regions...
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Exploring Tessellations
Fifth graders examine how to make tessellations. In this tessellation lesson, 5th graders review the meaning of the word "polygon" while the teacher shows them various examples. They practice making tiling patterns or tessellation's with...
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Animal Colors and Shapes
Students investigate the natural characteristics of animals by completing a coloring activity. In this animal properties lesson, students investigate the reasons different animals have specific colors, and how it is essential for...
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Why Doesn't SSA Work?
Students investigate the relationship between angles and their sides. In this geometry lesson, students prove why SSA does not work as a true angle side relationship theorem.
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Powerful Polygons
Students scan the classroom to find different common shapes. They listen as the teacher defines polygon and regular polygon. The teacher demonstrates regular polygons via the Internet and the "Math is Fun" web site. Students go outside...
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Bubbleology Mickey Mouse Style
Students investigate the effects of four different shaped wands and geometric shapes in a bubble solution. In this bubbleology lesson, the students build water and soap molecules. Students work in cooperative groups and conduct...
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Polygon Perimeters
Fourth graders practice finding the perimeter of shapes. For this measurement lesson, 4th graders review the meaning of perimeter and work in groups to draw polygons with differing perimeters. Students share their polygons...
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Distance Formula
Students calculate the distance between two points using the distance formula. In this geometry lesson plan, students derive the distance formula using the Pythagorean Theorem.
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STAINED GLASS PAPER SCREEN
Students observe the shapes and lines that make up a stained glass window, and create a small scale stained glass screen using paper.
Alabama Learning Exchange
Trapezoids: What's Equal or Right About Them?
Pupils explore the concept of trapezoids. In this trapezoids instructional activity, young scholars identify legs and bases of a trapezoid. Pupils discuss the similarities and differences between isosceles trapezoids and...
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Building Shapes From Numbers
Students experience how to illustrate some of the many connections between number and geometry. Through this 2-3 day focus on square numbers and triangular numbers, students make connections among mathematical topics.
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Geometry in the Real World
Eighth graders complete a unit of lessons on basic geometry concepts. They participate in a variety of activities, culminating in a project that involves publishing a booklet or a poster that presents the major geometry concepts from the...
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Geoboard Squares
Students create squares of different sizes on a geoboard. They find and describe a pattern. Students use the pattern to determine the number of squares possible on a 10-by-10 geoboard. They create squares with a horizontal base (and...
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Mine Shaft Grade 8 Slope
Eighth graders investigate slopes using real life scenario. In this algebra lesson, 8th graders model and interpret real life data. They plot their data in a coordinate plane and discuss the results with the class.
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Algebra I - Worksheet G12: Graphing Lines
In this graphing lines learning exercise, students graph 28 lines given various data. Students graph lines given two points, a point and slope, and a line perpendicular or parallel to a point.
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Teaching Polygons using Technology
Third graders utilize different types of computer programs, such as Microsoft paint and Microsoft Word to study and create different types of polygons. They use PowerPoint to create a story about a shape and others that it meets during a...