Curated OER
Symme"tree"
Students practice drawing lines of symmetry after the teacher draws shapes on the board. They create a class symme"tree" using only symmetrical shapes to decorate it.
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That's So Square
Second graders are introduced to circles, triangles and parallelograms. As a class, they create the shape with their bodies and are shown the shapes in their actual size. To end the instructional activity, they sketch each shape and...
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Fold and Cut 2
Second graders make, name, and describe, using their own language and the language of geometry, everyday shapes and objects. They create and discuss geometric patterns which repeat (show translation), or which have rotational or...
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Transformation
Third graders investigate symmetry by reflecting objects in different angles. In this geometrical transformation lesson, 3rd graders define the terms translation, rotation and reflection in order to physically turn geometric...
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Truncated Dodecahedron
In this math worksheet, students build a truncated dodecahedron. This is a solid shape with 12 regular decagonal faces and 20 equilateral triangular faces. Students build this shape to assist in developing their cognitive and geometric...
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Truncated Icosidodecahedron
In this math worksheet, students use a paper model to build a truncated icosidodecahedron. The worksheet includes a model that is to be cut out and put together by the student. There is an option to include a small preview of the...
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Dodecahedron
In this dodecahedron worksheet, students build a model of a dodecahedron. The pattern for this shape is made up of twelve pentagons. This is a worksheet generator, and the teacher can choose if a sample of the completed shape will be...
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Truncated Icosahedron
For this math worksheet, students build a model of a truncated icosahedron. This shape has 12 regular pentagonal faces and 20 regular hexagonal faces. An option to include a preview of the finished model is included for the teacher.
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Symmetry
Sixth graders explore symmetry and discuss the difference between a rotation and reflection. Using hands-on activities, such as folding paper shapes, they discover how to find the lines of symmetry and symmetrical characteristics. As a...
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When A Line Meets Itself
Students investigate the linear characteristics of cultural art. In this art analysis lesson, students discover the Pre-Columbian Chimu culture and the many masks they created. Students identify the different shapes and lines...
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Tangram Puzzles
Students explore the origin of tangram. In this algebra instructional activity, students form different shapes and figures using tangram. They solve for the area of different shapes without using any geometric formulas, but the idea of...
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Symmetry, Similar & Congruent Shapes
Fifth graders identify lines of symmetry., similar and congruent shapes. They use construction paper to create their own symmetrical shapes. Students create stained glass frames containing symmetrical, congruent and similar shapes.
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Symmetry of Road Signs
Young scholars identify symmetry in road signs. In this geometry lesson, students explore objects in the real world for symmetry. They perform translation, rotation and reflection.
Illustrative Mathematics
Placing a Fire Hydrant
Triangle centers and the segments that create them easily become an exercise in memorization, without the help of engaging applications like this lesson. Here the class investigates the measure of center that is equidistant to the three...
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Fun With Symmetry
Students manipulate shapes to find multiple lines of symmetry. They use color to visualize the lines of symmetry.
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Fractions
Students study fractions. In this art lesson, students fold paper, use origami, making new shapes and discuss the area of the shapes created.
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Math Lesson: Rotational Symmetry
Students analyze lines of symmetry and rotational symmetry in designs. They practice dividing a shape along its line(s) of symmetry and discuss the relationship between lines of symmetry and number of sides as well as rotations.
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Help Maggie Rebuild Her Airplane!
In this airplane instructional activity, students build airplanes out of paper and test their accuracy while flying them. Students build 6 planes and fill out test logs to go with them.
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Pumpkins
Third graders create a pumpkin lantern. They work in groups to illustrate the growth of a pumpkin seed. Students are asked what they think of when they see the color orange. They choice one person from the group to get a piece of...
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Classifying Polygons
Students study polygons. In this math lesson, students play a game in which they learn the classification system for polygons. Students identify the properties of quadrilaterals.
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Fractal and the Dragon Curve
Students explore Fractal designs. In this geometry instructional activity, students observe the different polygons created in nature and relate it to math. They define polygons on planes and rotate polygons about a point.
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Transformations Using the Geometer's Sketchpad
Students discover rules for single transformations, rules for composition of transformations, when a figure has transformation symmetry, and if a transformation is congruent to its preimage.
Mathematics Vision Project
Module 6: Congruence, Construction, and Proof
Trace the links between a variety of math concepts in this far-reaching unit. Ideas that seem very different on the outset (like the distance formula and rigid transformations) come together in very natural and logical ways. This...