Curated OER
Nature's Polyhedrons
Learners discover the characteristics of polyhedra. Through hands-on activities and interactive videos, students investigate and retrieve information on polyhedra and crystal structures. Learners study angles and symmetry. They...
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Measuring Angles
In this math worksheet, students use protractors to measure each of a set of angles. This is a worksheet generator, the teacher controls the minimum and maximum angles students are presented with as well as whether or not to rotate...
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Triangle Inequality Theorem
Young scholars use the inequality theorem to solve triangles and their properties. In this geometry instructional activity, students are given spaghetti of different lengths and asked to create triangles. They conclude the necessary...
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Application of Graph Theory
Students investigate different online tutorials as they study graphing. In this graphing activity, students apply the concept of graphs cross curricular and use it to make predictions. They define the purpose and theories behind graphs.
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Am I Seeing Double?
Students explore symmetrical design and lines of symmetry. In this fourth grade geometry lesson, students create their own symmetrical design and identify and label the lines of symmetry. Students use one design to create a...
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Exploration with Geometric Solids
Students reinforce geometric concepts by playing "Guess My Solid." Through a process of elimination, they determine the shapes of mystery solids. Finally, students use various materials to construct their own geometric figures.
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Triangles in My Life
Tenth graders investigate where in the real world triangles are used. In this geometry lesson plan, 10th graders write an essay describing where in their lives triangles are used. They can use food, buildings, clothing or anything...
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3-D Attributes
Students explore geometric solids. In this geometry lesson, students listen to the book The Greedy Triangle by Marilyn Burns, then work in groups to sort geometric solids into various categories. Students define geometric solids...
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Properties of Special Parallelograms
Students identify properties of trapezoids. In this geometry lesson, students are put into groups and use computer programs to analyze polygons. They drag and move the shapes around as they make predictions.
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Fractals Rock
Students identify the repeated sequences of a pattern. In this geometry lesson, students identify fractals in patterns and nature. They construct a fractal tree and make conjectures.
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Fractals Rock: Investing the Fractal Tree
Students investigate the relationship between fractals and sequences. In this geometry lesson, students build a fractal tree. They investigate different career fields where fractals are used in the real world.
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Investigating the Sierpinski Triangle
Students solve and analyze the sierpinski's triangle. In this geometry lesson, students identify properties and theorem of triangles. They solve problems involving angles and sides of triangles.
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The Sierpinski Triangle
Students investigate the Sierpinski triangle. In this geometry lesson, students define fractal curves and its relationship to triangles. They identify repeating sequences and relate it to fractals.
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Triangles with Collinear Circumcenters
Students identify the circumcenter of a triangle. In this geometry lesson, students construct a perpendicular bisector using a straight edge and a compass. They differentiate between triangles and collinear points.
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Pick's Theorem
Students investigate Pick's theorem by completing a lab. In this geometry lesson plan, students construct polygons using cabri software. They calculate the area of polygons and identify the vertices of each shape.
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Discovering Euler's Theorem
Learners identify different parts of a prism and polyhedra. For this geometry lesson, students identify the number of faces, edges and sides of polygons. They solve problems by recognizing patterns.
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Pedal Triangles
Students identify the properties and theorems of triangles. For this geometry lesson, students construct angle bisectors using a compass and straight edge. They identify triangular similarity and congruency.
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Incenter of a Triangle
Tenth graders find the incenter of a triangle. In this geometry lesson plan, 10th graders define the way to create an incenter with an angle bisector. They differentiate between incenter and incircle.
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Parallel and Perpendicular Lines
Learners study parallel and perpendicular lines. For this parallel and perpendicular lesson, pupils explore 2-D shapes and determine if the sides are parallel or perpendicular.
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Pythagorean Theorem: Triangles and Their Sides
Students investigate triangles and their relationship to each other. In this geometry lesson, students solve right triangles using the properties of the Pythagorean Theorem. They differentiate between right, acute, straight and oblique...
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Area of Triangle using the Semi-Perimeter and Radius
Young scholars investigate the properties of circles. In this geometry lesson, students calculate the area and perimeter of a triangle. They identify the perimeter and radius length of a circle.
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Examining Geometric Solids
Students explore geometry by completing a math worksheet in class. In this shape identification lesson, students identify the characteristics associated with 15 solid geometric shapes. Students identify patterns between vertices, edges...
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Orthographic Drawings
Students investigate the creation of three dimensional drawings. In this geometry lesson, students analyze and complete orthographic drawings. They Cabri software to manipulate and move the drawings around.
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Orthographic Drawing
Learners investigate orthographic drawings. In this geometry lesson, students identify properties of three dimensional drawings in space. They solve problems using volume and area formulas.