Curated OER
Cafeteria Mayhem
Students design a cafeteria floor plan. In this area and perimeter lesson, groups create an efficient lunchroom layout on poster board by using geometric shapes and formulas as the basis for their designs. In the accompanying writing...
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Inscribed Quadrilaterals and Parallelograms
Students differentiate between inscribed quadrilaterals and parallelograms. For this geometry lesson, students identify the shaped of the polygons when it is inscribed inside of a circle. They calculate the missing angles of the...
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Navy Sail Design
Learners use the Pythagorean Theorem to explore sailboat design. In this Pythagorean Theorem lesson, two sides of a triangular sail are measured, and the theorem is used to calculate the third side. A worksheet, bulletin board design,...
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The Structure of the Galaxy
Students infer the galaxy shape. For this structure of the galaxy lesson students observe the distribution of objects in the sky and answer questions.
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Community Building
Students build different shapes using sketches. In this geometry lesson, students explore measurements and units as they build and create models of buildings. They use SketchUp to create and manipulate shapes.
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Let's Explore the World of Triangles and Quadrilaterals!
Second graders explore the features of triangles and quadrilaterals. In this lesson on triangles and quadrilaterals, 2nd graders rotate with their group to five different activities all exploring a different aspect of geometry.
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Euler Characteristic
Students identify the different properties of Euler's Characteristics. In this geometry activity, students identify the shape and surface a polygon. They relate the concept of Euler to solving real world problems.
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Scalene Triangles
Fifth graders identify and classify scalene, equilateral, and isosceles triangles. In this triangle lesson, 5th graders define the different attributes of 3 types of triangles and sort them by descriptions and comparisons. Students...
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Traditional Desert Homes
Young scholars go to a traditional style desert home and then build their own model of a home to scale. In this desert home lesson plan, students conduct their research in New Mexico.
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Area of Triangle using the Semi-Perimeter and Radius
Students investigate the properties of circles. In this geometry lesson plan, students calculate the area and perimeter of a triangle. They identify the perimeter and radius length of a circle.
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Inscribed Right Triangles
Students calculate the measurements of the inscribed angles of a triangle. In this geometry lesson, students relate the hypotenuse of a right triangle and the diameter of a circle to each other. They calculate the diameter of a circle as...
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Measurement of a Central Angle
Students calculate the measurement of a central angle. In this geometry lesson, students identify properties of circles. They use Cabri software to create and analyze graphs.
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Arc Measurement Based on The Measurement of a Central Angle
Students define keywords that are important to solve problems. In this geometry lesson, students find the arc length and angle of a circle. They convert between radians and degrees.
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Equilateral Triangles
Students examine the attribute of equilateral triangles. In this equilateral triangle lesson, students examine a number of paper triangles to determine how they are classified. They determine how triangles are depicted in Navajo rugs.
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Creating Hope: Making Butterfly Stamps
Students create foam ink stamps. In this Holocaust instructional activity, students discover the history of the Holocaust and why butterflies represented a symbol of hope during those times. Students use BalsaFoam to carve out a...
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Secant Line Approximation of the Tangent Line
Young scholars perform operation with secant and tangent lines. For this calculus lesson, students find the derivative and relate it to the slope of a line. They differentiate between secant and tangent as they intersect a circle, using...
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Sled Kites and Trigonometry
Students study the history of kites and their fundamental properties. In this kites lesson plan students divide into teams and build and fly kites.
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Hexagon Island
Students identify different polygons. In this geometry lesson, students name polygons using the number of sides. They calculate distance and slopes using the correct formula.
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Diagonals to Quadrilaterals II
Students identify the properties of different polygons. In this geometry lesson, students find the slope of a line and calculate the distance between two lines. They differentiate between similar and congruent polygons.
Pennsylvania Department of Education
Extending Pattern Understandings
Students use shapes and manipulatives to demonstrate patterns. In this patterns lesson plan, students also break up patterns to identify a pattern unit.
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Geo-Town
Second graders use a checklist to construct a Geo-Town map including a compass rose, a map key, and a paragraph about a walk around Geo-Town, using appropriate geometric and directional vocabulary to identify the two-dimensional figures...
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Shape Makes a Difference!
Students learn the difference between perimeter and area by watching a video and a hands on activity.
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Million Dollar Gift
Third graders create a box big enough to hold a million dollars. This is a project fun to do near the winter holidays with inexpensive gifts included in the boxes. This hands-on lesson very effectively demonstrates the concept of volume.
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Geo Jammin By Design: The Important Thing
Students brainstorm what they know about geometric terms and patterns. They identify symmetry, shapes and congruency. They create a book of symmetry.