Curated OER
Chors, Secants, Tangents
Pupils identify the relationship between chords, secants and circles. For this geometry lesson, students calculate the length of the chords. They sketch the secant lines on a circle.
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Distance Formula
Students calculate the distance formula. In this geometry lesson, students find the distance between two points on a coordinate plane. They identify the four different quadrants.
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Midpoint Formula in the Coordinate System
Students calculate the midpoint of a line. In this geometry lesson, students identify the different parts of the coordinate plane. They use the midpoint formula to find the middle of segments between a pair of coordinates.
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A Sphere and Its Net
Learners identify and sketch the nets for sphere. For this geometry lesson, students differentiate between two and three dimensional shapes. They find the surface area of each sphere.
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Surface Area of Prisms
Students calculate the surface area of different prisms. In this geometry lesson, students identify the shapes of solids based on the properties of that solid. They calculate the surface area using nets and properties of prisms.
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Scale Factor- Surface Area and Volume
Young scholars calculate the surface area and volume of shapes. For this geometry lesson, students create different scales and calculate the volume and area for each shape. They compare and contrast between the different scales and shapes.
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Incenter of a Triangle
Tenth graders explore the properties of the incenter of a triangle. In this geometry lesson, 10th graders construct a triangle and the angle bisectors of each angle. The dynamic properties of Cabri Jr. allow students to locate and...
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Fixed Perimeter Rectangle
Teach how to solve for the area and perimeter of rectangles. For this geometry lesson, students are given fixed perimeter rectangles and asked to find the area and side length of the rectangles. they draw their rectangle on the navigator...
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Cones, Cylinders, Spheres
Students classify polygons by name and shape. For this geometry lesson, students identify the lateral surface of each conic. They differentiate between cones, cylinders and spheres.
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More Prisms/Nets
Pupils calculate the volume and surface are of three-dimensional shapes. In this geometry instructional activity, students use the nets to prove their calculations of shapes. They identify the different parts of a solid using the nets.
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Sketching Cones
Young scholars sketch cones and identify its properties. In this geometry lesson, students calculate the surface area and volume of each three dimensional shape. they define and sketch prisms, pyramids and cylinders.
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Sketching Cylinders
Students create nets of cylinders. In this geometry lesson, students calculate the surface area of cylinders and other solids. They show their understanding of three-dimensional shapes by solving problems.
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Sketching Prisms
High schoolers sketch and create nets of different polygons.In this geometry lesson, students differentiate prisms from other three-dimensional shapes. They define the properties of prisms.
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Sketching Pyramids
Students sketch and identify properties of pyramids. In this geometry lesson, students create nets to identify three dimensional shapes. They sketch cones, prisms and pyramids.
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Transformations-Translations
Learners perform transformations and translation on a coordinate plane. In this geometry lesson, students move shapes around on a graph identifying translation, image, and transformation. This lesson has an interactive part online that...
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Same Area and Perimeter
Students identify the shapes of different polygons. In this geometry lesson, students identify the same area and perimeter in shapes. They use the correct formula for the correct shape.
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Angle-Side Relationships
High schoolers calculate the different sides and angles of a triangle. In this geometry lesson, students use triangular properties to define the relationship between two triangle. They identify missing angles using the interior angle...
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Scale factors: Ratios and Proportions
Pupils create building and models using scale factors. In this geometry lesson plan, students apply the properties of ratio and proportion to solve problems. They identify the means and extremes property of cross multiplication.
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Special Right Triangles
Students identify the different parts of a right triangle. In this geometry instructional activity, students use the Pythagorean Theorem to identify missing sides and angles of a right triangle. They work with irrational and rational roots.
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Angle-Side Relationships
Students investigate triangles and their angle-side relationship. In this geometry lesson, students identify the property of the triangles and use it to solve the problem correctly. They use the TI to graph their triangles.
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Triangle Inequality Theorem
Students identify properties of triangles. In this geometry lesson, students create triangles using three different segments. They make conjectures and predictions.
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Tangents to a Circle
Students construct tangent lines. In this geometry lesson plan, students identify the point of tangency, secant and tangent lines. They graph the lines on the Ti and make observations.
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Pyramids on Parade/Nets
Students sketch the shape of three dimensional pyramids using nets. In this geometry lesson, students differentiate a pyramid from other three dimensional shape. They define the attributes of pyramids.
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Transformers
Learners use transformation to move the graph around. In this geometry lesson plan, students observe transformation of symmetry groups. They use the TI to move the sides of the polygons around and make predictions.
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