Curated OER
The Quirky Quadrilateral
Fourth graders identify and classify different triangles and quadrilaterals. Then they demonstrate an understanding of plane and solid geometric objects and use this knowledge to show relationships and solve specific problems. Students...
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Powerful Polygons
Students scan the classroom to find different common shapes. They listen as the teacher defines polygon and regular polygon. The teacher demonstrates regular polygons via the Internet and the "Math is Fun" web site. Students go outside...
Curated OER
How many isosceles Triangles Can You Find?
Fifth graders solve problems while examining a variety of isosceles triangles. In this isosceles triangle lesson plan, 5th graders examine shapes to find their characteristics. Students pay particular attention to the...
Curated OER
Quilt Squared
Students study West Virginia quilts. In this mathematics lesson, students use symmetry, geometric shapes, and patterns to create their own quilt square.
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Tangram Geometry
Students listen to a story involving Tangram pieces. Students use Tangram pieces to complete shapes using an outline of a design.
Curated OER
Identifying Angles
Fourth graders discuss and examine examples of the different types of angles. After learning the names of the geometric shapes students identify the types of angles and then complete the Kidspiration activity, Identifying Angles.
Curated OER
Angles Everywhere
First graders find angles in their classroom. In this geometric figures lesson, 1st graders identify, describe and classify angles they see in their world. Students create pictures that contain angles and display them in the room.
Curated OER
What are the Kinds of Triangles?
Fifth graders classify triangles. For this triangle lesson, 5th graders learn about the characteristics that make up a triangle. They are instructed through video, PowerPoint slides, and teacher-led demonstrations.
Curated OER
Mr. Bo Jangle, What's Your Angle?
Third graders explore angles. In this geometry lesson, 3rd graders identify and define acute, obtuse, and right angles. Students form angles with their bodies, find angles in picture books, and record angles found outside in their math...
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Volume and Surface Area of Right Rectangular Prisms
Students identify the formulas for three-dimensional figures. They use manipulatives to model problems. Students create foldables and explain volume and surface area. Students complete worksheets and classify solids. Students sing a...
Curated OER
What Are Some Different Ways You Can Group Buttons
Second graders classify and group buttons. They discuss how their buttons are alike and different, and identify the characteristics of their handful of buttons. Students then classify their buttons into three groups, and create a...
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A World of Symmetry
Students identify lines of symmetry. In this symmetry lesson, students create objects and identify their lines of symmetry. They answer questions about lines of symmetry. Students cut shapes out of cookie dough and...
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How many edges do I need to cut in order to open a cube?
Students problem solve to open a cube to create different shapes. In this problem solving lesson plan, students are given a cube and the shapes to open it up to, and they have to cut the cube open to make certain shapes. This gives them...
Curated OER
Angles, Triangles, Quadrilaterals, Circles and Related
Students classify angles. In this angles activity, students explore the characteristics of angles, triangles, quadrilaterals and circles. They identify polygons and sing a classifying angles song. Students participate in a...
Curated OER
Geometry and Quilting
Students create a quilt square for a class quilt using at least three, two-dimensional geometric figures. They research and write a brief description of at least two different quilt patterns that they find. Pupils discuss that quilts are...
Curated OER
Seed Sorting 101
Students sort through numerous seeds to find similarities and differences. In this sorting and classifying lesson plan, students divide up different plant seeds based on their similarities and differences, while keeping record of their...
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Identify Polygons: Algebra/Geometry Institute
Eighth graders classify geometric figures. In this polygon lesson, 8th graders identify given geometric figures. They compare and contrast different polygons. Students name line segments, identify parallel lines, and...
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Properties of Parallelograms
Learners identify different properties of parallelograms. In this geometry lesson, students complete problems that proves the theorems and properties of parallelograms. They graph the different shapes on paper.
Curated OER
Estimate then Measure the Angle #4
For this angles worksheet, students estimate angles to within 15 degrees, then measure and name each. A reference web site is given for additional activities.
Curated OER
Snowflake Detectives: What Crystal Shape Can Tell Us
Middle schoolers classify snowflake crystals using geometric descriptors. They hypothesize about the temperatures at which the snowflakes were formed using a temperature/shape chart. They collect and examine snowflakes before drawing and...
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Circles and Clocks, Shapes and Time
Students work in groups to research clocks and practice telling time. In this telling time lesson plan, students use the computer program ProQuest to study circles, including radius and diameter, and practice drawing circles using a...
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Equations of Lines
Students classify lines, slopes and shapes. In this calculus lesson plan, students calculate the midpoint, segment and equation of a circle. They also review what a slope and angle of inclination is.
McGraw Hill
Triangles
After reviewing characteristics of seven types of triangles, young geometers discover how to find the missing angle of a triangle. Then, they practice identifying triangles, find missing angles, and find missing side lengths of...
Curated OER
Polynomial Functions
Learners explore polynomial functions. In this Algebra II lesson, students explore graphs of polynomial functions as classify the functions as linear, quadratic, cubic, or quartic. Learners determine the regression equation...