Curated OER
Sports and Geometry
Students investigate shapes in sports. In this geometry lesson plan, students identify geometric shapes in sports equipment, fields, etc. Students present their findings.
Curated OER
Extra! Extra! (Geometry Extensions)
Students respond to questions based on quotes, research, and logic, and challenge problems related to the current objectives.
Curated OER
Geometry: Lesson 6: Shapes
Fourth graders design a figure using the given geometric shapes from a set of tangrams. They manipulate common shapes to analyze and make new figures. They complete a worksheet associated with the instructional activity.
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Basic Geometry Ideas and Angle Measurement
Seventh graders explore the concept of basic geometry. In this basic geometry instructional activity, 7th graders identify the correct picture for a given vocabulary word such as midpoint, line, ray, or parallel lines. Students discuss...
Curated OER
A Snap at Geometry
Students study geometric images and polyhedrons. In this geometry lesson, students complete several activities to learn about geometric shapes and classify polyhedrons from polygons. Students watch a video, complete a web-directed...
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Geometry Digital Blogging Books
Learners observe geometric shapes in their everyday lives. In this middle school/high school mathematics lesson, students use their cell phone to record and publish their observations about the geometric shapes they...
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Geometry in the Heavens
Ninth graders access a star worksheet and determine properties of polygons. For this investigative lesson students complete a worksheet and discuss myths.
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Geometry: Lesson 2
Eighth graders engage in a lesson that is concerned with examining two dimensional figures with different properties that include circles, triangles, queadrilaterals, etc... They identify the types of figures that is identified as polygons.
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Standard Treehouse Lesson Plan
Seventh graders investigate the concepts related to the geometry of treehouses that focuses on angles that are similar and congruent. They conduct class discussion in terms of looking at three dimensional shapes that are represented in...
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Lesson #10 Fractals
Students listen to a lecture on fractals. A video is mentioned, but not linked to the lesson. Students discuss graphing calculators and their features.
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Storm Clouds-- Fly over a Late Winter Storm onboard a NASA Earth Observing Satellite
Students study cloud data and weather maps to explore cloud activity. In this cloud data instructional activity students locate latitude and longitude coordinates and determine cloud cover percentages.
West Contra Costa Unified School District
Law of Sines
Laws are meant to be broken, right? Learners derive the Law of Sines by dropping a perpendicular from one vertex to its opposite side. Using the Law of Sines, mathematicians solve for various parts of triangles.
West Contra Costa Unified School District
Parallel Lines Cut by a Transversal
Parallel lines seem so right for each other. It's too bad they'll never, ever meet. Learners use tracing paper to discover relationships among angles formed by two parallel lines cut by a transversal. They apply this information to find...
Texas Instruments
REAL LIFE REAL WORLD Activity - Surveyor
Learners investigate surveying in this secondary mathematics lesson. They will explore a real world application of geometry and trigonometry as they create a plot plan using a geometry utility and calculate the area of the land parcel.
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Reflecting a Triangle in the Coordinate Plane
Learners explore geometric concepts using technology. They manipulate the TI to find important math topics. This activity requires a TI-84 or higher.
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Exploring the Circumcenter of a Triangle
Young scholars construct the circumcenter of a triangle. In this constructing the circumcenter of a triangle lesson, students construct a triangle using Cabri Jr. Young scholars draw perpendicular bisectors of the sides of the triangle....
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Inscribing a Circle in a Triangle
Pupils investigate inscribing a circle in a triangle. They use Cabri Jr. to draw a triangle, locate the incenter, and use the distance from the incenter to a side of the triangle to inscribe a circle. The dynamic nature of the geometry...
Curated OER
Transformations: Translations
Students perform transformations and translations using polygons. In this geometry instructional activity, students perform transformations on a coordinate plane. They identify the image and pre-image of each figure.
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Properties of Parallelograms
Scholars explore parallelograms in this geometry lesson. They investigate the properties of a parallelogram. Assisted by technology, your learners will construct a parallelogram and examine the sides, angles, and diagonals to discover...
Curated OER
Properties of Special Quadrilaterals
Teach your mathematicians how to identify the properties of quadrilaterals. In this geometry lesson, high schoolers solve for missing angles and sides of a special quadrilateral. They use the TI to move the sides around and create...
Curated OER
Transformations: Reflections
Students perform transformations on their graphs. In this algebra instructional activity, students identify the pre-image and image. They find and identify congruent shapes and isometry.
Curated OER
Our School - Our Trees
Sixth graders observe school ground trees planted nearly 3 decades ago. For this ecology lesson, 6th graders examine a group of trees planted near their campus and measure the diameter, circumference and growth of the tree compared...
Curated OER
Flips, Sides and Turns: Exploring Transformations
Students use an online dictionaries to define key geometric terms. They explore several websites to help them differentiate the terms reflections, translations and rotations as they apply to geometry and then complete an assessment...
Texas Instruments
Trisecting a Square
High Schoolers investigate the question of whether or not the area of square can be trisected. In this instructional activity, they use geometry software to answer the questions and determine what conditions are necessary to the three...
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