Curated OER
Quadrilateral Review
Students identify the properties of quadrilaterals. In this geometry activity, students investigate the history of quadrilaterals and different types of quadrilaterals. They identify the length and mid-segment of each shape.
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Similar Triangles - Applied Problems
Students differentiate between similar and congruent triangles. In this geometry activity, students identify the angles of triangles using the similarity theorem. They apply concepts of triangles to the real world.
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Crop Circles
Students calculate the area and circumference of a circle. In this geometry lesson, students solve word problems with circles and create formulas to calculate the area. They find the rate and complex area of a circle.
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Calculating Distances in Two and Three Dimensions
Students use the Pythagorean Theorem to solve problems. In this geometry lesson plan, students solve for the distances by calculating the different parts of the shape of a two and three dimensional shape. They reason by analogy.
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Unit Circle and Triangle
Pupils apply the Unit Circle to solve ratios of triangles. In this geometry instructional activity, students derive the different ratios of a triangle using the Pythagorean Theorem. They find the angles of a unit circle using a right...
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Graphing Coordinates
Sixth graders practice graphing coordinates. In this geometry lesson, they use the x and y axis to locate points that must be connected in the right sequence to form a straight line.
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Using Geometric Shapes in Architecture
Third graders identify two and three dimensional shapes used in architectural designs by viewing images on the Internet. In this geometry lesson, 3rd graders create their own building designs and identify the geometric shapes that...
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Congruent and Similar figures
Eighth graders explore congruent and similar figures. In this eighth grade geometry instructional activity, 8th graders use geoboards to create congruent and similar figures and explore the relationships between the sides and...
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Surface Area of Cubes and Rectangular Prisms
Eighth graders calculate surface area of 3-D shapes. In this geometry lesson, 8th graders analyze cubes and prisms by finding their area and surface area. They compare the data of these two shapes.
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How are Trig Ratios Used to Measure Triangle Sides
Pupils identify the ratios of trig identities. In this geometry lesson plan, students solve the missing sides and angles of triangles using trig ratios. They relate the graphs and waves to real life scenarios.
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The Search for Pythagoras' Treasure
Students identify and define properties of triangles. In this geometry lesson, students identify the missing sides and angles of right triangles. They use the rules of the Pythagorean Theorem to solve their problems.
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Proportional Similarities
Students model the geometric relationship with graphing. In this geometry lesson plan, students differentiate between parallel, perpendicular, similar and congruent shapes. They use properties of polygons to differentiate their...
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Pythagorean Theorem
Pupils apply properties of Pythagorean to solve problems. In this geometry lesson, students identify the different parts of a right triangle using ratios. they solve problems using squares and square roots.
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Arc Length - Horse
Students define an arc and calculate its length. In this geometry lesson plan, students find examples of arc in the real world. They show their understanding of arcs through problem solving.
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Quadrilateral Bunny
Students identify the properties representing quadrilateral. In this geometry lesson plan, students differentiate between special and regular quadrilaterals. They discuss and demonstrate hierarchy of quadrilaterals.
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Sum of Interior/Exterior Angles with Wilbur
Students identify the interior and exterior measures of polygons. In this geometry activity, students identify the formula for interior angles of polygons. They differentiate between triangular and polygons angles.
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