Curated OER
Connecting Formulas Related to Geometric Figures
Young scholars identify diagrams of quadrilaterals and circles by different names and classify the figures. They name the areas for each diagram and practice solving the formulas for each.
Curated OER
Area of Polygons
Students engage in a lesson that is about the concept of polygons and focuses upon finding the area. They use formulas provided in the lesson in order to solve problems given by the teacher for independent practice. Geometric figures are...
Curated OER
Investigation-Looking at Polygons
Eighth graders plot points and investigate polygons. They locate a point, using ordered pairs of integers on the coordinate plane. Students compare geometric measurements and computations on coordinate axes as they are applied to...
Curated OER
Math-Geometry: Area and Perimeter
Upper graders measure the area and perimeter of several items. In this area and perimeter instructional activity, learners engage in measuring area and perimeter in several scenarios. Full-group instruction requires students to listen to...
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Geometry: Plane Figures
In this plane figure worksheet, students complete 4 multiple choice questions, determining which solid figure can be traced to make a given plane figure. A reference web site is given for additional activities.
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Pyramids and Prisms: Guler's Formula
Sixth graders detect and categorize the attributes of geometric shapes to solve problems. In this geometry lesson, 6th graders construct a variety of polyhedra. Students recognize the relationships between two dimensional and three...
Curated OER
Napolean Triangle
Students investigate the Napoleon triangle theory. In this polygon lesson, students differentiate between the boundary points, interior and lattice point of a polygon. They apply concepts of equilateral triangles to solve...
Illustrative Mathematics
Comparing Snow Cones
Everyone wants to have the biggest snow cone possible, so would that be in cone-shaped cup or a more cylinder-style cup? Hungry geometry juniors compute the volume of each in this practical task.
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Marshmallow Figures
Students enjoy making 3-D figures while learning about rectangular prisms, pyramids, vertices, edges, and faces. After a lecture/demo, students use marshmallows, toothpicks and a worksheet imbedded in this lesson to create 3 dimensional...
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Congruent Figures
In this congruent figures worksheet, students apply their math skills as they respond to 4 questions that require them to select shapes that are congruent to the 4 given shapes.
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Geometry in Tessellations
Students examine tessellations and their geometric properties. Students also develop a better understanding of lines, planes, angles, and polygons.
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Geometry in the Heavens
Ninth graders access a star worksheet and determine properties of polygons. In this investigative lesson students complete a worksheet and discuss myths.
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Trace a Face
Learners find two dimensional shapes in three dimensional figures. They determine the shapes that make up the faces of three dimensional figures of common classroom objects such as crayon boxes.
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Isosceles Triangle Theorem
In this geometry worksheet, students differentiate between regular triangles and isosceles triangles. They apply the converse theorem and the vertex angle. There are eleven questions with an answer key.
Math Mammoth
Volume Problems
In this volume problem instructional activity, students determine the volume of various objects. They compare similar objects and determine the percent of increase and decrease of the surface area and volume. This one-page instructional...
Curated OER
Regents Exam Questions G.G.9: Planes
In this planes worksheet, learners solve 3 short answer problems. Students determine a true statement given lines perpendicular to a plane.
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Sum of Interior Angles
In this sum of interior angles worksheet, 10th graders solve 10 different problems that are related to determining the sum of various interior angles in figures. First, they determine the sum of the interior angles of a dodecagon. Then,...
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Many Colored Maps
In this map worksheet, 6th graders identify and complete 10 different problems that include various dimensional maps. First, they complete the table on the right by coloring the maps found on the bottom. Then, students determine the...
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Angles Lesson Plan
Students explore the relationship of angles as it relates to 2 and 3-D shapes. In this geometry lesson, students differentiate between acute, obtuse, right, alternate interior, exterior and adjacent angles. They manipulate a math...
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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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Rotational Symmetry
In this rotational symmetry instructional activity, 10th graders identify and compare 10 different figures illustrated on the sheet. They write the order of rotational symmetry seen in each figure as compared to the others. They also...
Curated OER
Geometry: Symmetry
In this symmetry worksheet, students select the shape from a choice of 4 that is not symmetrical, 4 problems total. Answers included on page 2.
Curated OER
Symmetry of the Southwest
Fourth graders examine mirror symmetry. In this symmetry lesson, 4th graders discover that symmetry is not always vertical or horizontal. Students cut and fold shapes along lines of symmetry.
Curated OER
Tessel Your Way to Nagano!: Olympics, Winter Sports, Snowboarding, Graphic Design, Geometry, Math, M.C. Escher, Tessellations
Students create Post-It note fundamental regions to tesselate. They make tesselations using computer software or websites. They create a jacket design with tesselation and determine the cost of production.