Worksheet
Curated OER

#### Similar Shapes

For Students K - 1st Standards
In geometry, similar and congruent shapes are often confused. Shapes that are similar are the same shape, but a different size. This activity gives young learners some practice in identifying similar shapes. There are five polygons...
Lesson Plan
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#### Congruent Polygons: Copying Stretchy Shapes

For Teachers 3rd
Third graders investigate congruent polygons through dance. In this congruency lesson, 3rd graders do the "brain dance" as a warm up. They review polygon names by singing "The Polygon Chant," before mirroring congruent shapes with a...
Lesson Plan
Curated OER

#### Match Shapes in Compositions

For Teachers 3rd
Third graders draw shapes that are congruent with each other and identify other congruent shapes. In this congruency lesson plan, 3rd graders also apply specific colors from the color wheel in their shapes.
Lesson Plan
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#### 2-D and 3-D Presents at Pedro's Party

For Teachers 5th
Fifth graders draw 2-D and 3-D shapes. They sketch and label geometric figures with correct terminology, then explore parallel and perpendicular lines. Pupils sort and classify shapes drawn.
Worksheet
Curated OER

#### Congruence in Triangles

For Students 9th - 10th
In this geometry worksheet, students identify and label triangles as being congruent or not. They use the SSS, ASA or SAS as their description. There are 18 questions with an answer key.
Lesson Plan
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#### Equilateral Triangles

For Teachers 4th - 5th
Students examine the attribute of equilateral triangles. In this equilateral triangle instructional activity, students examine a number of paper triangles to determine how they are classified. They determine how triangles are depicted in...
Lesson Plan
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#### Symmetry in Nature and Congruent Shapes All Around

For Teachers 2nd
Second graders explore symmetry and congruent shapes. In this math lesson, 2nd graders identify examples of symmetry and congruent shapes in nature. Students take photographs and create a multimedia presentation of symmetry and congruent...
Worksheet
Curated OER

#### Geometry: Congruent Figures

For Students 4th - 5th
In this congruent instructional activity, students identify congruent figures in a given set of shapes. A reference website for additional resources is given.
Worksheet
Curated OER

#### Congruence Activity

For Students 5th Standards
Worksheet
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#### Pair Them Up

For Students 2nd - 4th
In this geometric shapes practice instructional activity, students examine 7 shapes on the left side of the page and match them with congruent shapes on the right side of the page. An example is included.
Lesson Plan
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#### Math: Symmetry and Similarity

For Teachers 6th - 8th
Students describe the differences between congruence and similarity. After explaining the motions that indicate congruency of two shapes, they complete worksheets to draw lines of symmetry and similar shapes. With straws and twist...
Lesson Plan
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#### TRIANGULATEERS IN THE REAL WORLD

For Teachers 3rd - 6th
Young scholars explore about triangles and the simple machines that are made from those triangles. They are able to identify the kinds of triangles in the machines, tell how the triangular shapes make the machines function, and build a...
Lesson Plan
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#### Snowflake Curve

For Teachers 6th - 8th
Students develop an appreciation for complex structures in nature. They observe patterns in nature in relationship to the Real World. Students use observation skills to assist in problem solving. They show comprehension of the concepts...
Lesson Plan
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#### Testing For Congruent Triangles

For Teachers 9th - 12th
High schoolers define and discuss congruency and the corresponding parts between congruent triangles. They create a pair of congruent triangles, test for congruency, and complete a worksheet.
Lesson Plan
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#### Medieval Mathematicians and Whimsical Windows

For Teachers 3rd
Third graders demonstrate their mathematical knowledge of symmetry and reflection using congruent geometric shapes while working as an artist and mathematician looking at a medieval-styled stained glass window.
Lesson Plan
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#### Congruent Boxes

For Teachers 1st - 3rd
Students decorate the congruent faces and edges of boxes in exactly the same way. They teach the terms "congruent," "faces," and "edges" to their parents.
Lesson Plan
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#### Congruency Basics

For Teachers 4th
Fourth graders investigate congruent shapes. In this congruency lesson, 4th graders explore examples of congruent shapes. Students determine how to check for congruency by sliding or flipping the shape.
Lesson Plan
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#### Math: Shapes and More Shapes

For Teachers 6th - 8th
Students locate lines of symmetry in regular polygons and predict the number of lines of symmetry in an octagon. In three different polygons, they construct all lines of symmetry and after making their prediction about the octagon,...
Lesson Plan
Curated OER

#### Figure This

For Teachers 2nd
Second graders identify congruent figures and match shapes using transformation. They work in groups, utilizing a worksheet imbedded in this plan to gain practice identifying congruent shapes.