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Lesson Plan
Curated OER

Triangle Proofs

For Teachers 10th
Tenth graders complete a unit of lessons on congruent triangles and triangle proofs. They observe and participate in teacher-led discussions of examples of the methods to prove that triangles are congruent, and create an original proof.
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Lesson Plan
Curated OER

Seeing Double

For Teachers 6th - 8th
Students develop an intuitive definition for symmetry after viewing a PBS video. They examine asymmetrical patterns and demonstrate their knowledge by changing them to symmytrical.
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Lesson Plan
Curated OER

Congruent Triangles Postulates

For Teachers 3rd - 4th
Students discover three lettered postulates that prove triangles congruent.
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Lesson Plan
Curated OER

Testing For Congruent Triangles

For Teachers 9th - 12th
Students 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.
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Lesson Plan
Curated OER

Geometric Twins

For Teachers 2nd - 3rd
Students investigate congruent shapes using dot paper to visualize, draw, and duplicate different congruent shapes.
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Lesson Plan
Curated OER

Are We the Same?

For Teachers 1st - 3rd
Students define and discuss symmetry, line of symmetry, and congruency. They cut shapes out of construction paper, identify the line of symmetry, and if they are symmetrical and/or congruent.
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Lesson Plan
Curated OER

Similar and Congruent Triangles

For Teachers 2nd - 4th
Students create and classify different types of triangles using an online geo-board. They explore the concepts of similar and congruent as they discover how to draw similar and congruent triangles.
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Lesson Plan
Curated OER

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.
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Lesson Plan
Curated OER

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.
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Lesson Plan
Curated OER

Congruency Basics

For Teachers 4th
Fourth graders investigate congruent shapes. In this congruency instructional activity, 4th graders explore examples of congruent shapes. Students determine how to check for congruency by sliding or flipping the shape.
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Worksheet
Curated OER

Congruent Figures

For Students 3rd - 4th
In this congruent worksheet, students match corresponding parts in 2 shapes. A website reference is included for additional resources.
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Worksheet
Curated OER

Congruent Shapes

For Students 3rd - 4th
In this congruent shapes instructional activity, students identify the congruent figures in sets of shapes. One example is completed. A website reference for additional activities is given.
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Lesson Plan
Curated OER

How Many Regular Polyhedrons Are There In This or Any Universe?

For Teachers 7th - 12th
Students examine the idea of "regularity" as it pertains to geometry.  In this geometry lesson students complete several assignments that are part of trihedral angles and regular polyhedrons.
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Lesson Plan
Curated OER

Congruent Shapes

For Teachers 1st
First graders view congruent shapes on a white board and define what congruent means.  In this congruent shapes lesson, 1st graders recognize which shapes are congruent and which aren't  Students complete a giant worksheet in class and a...
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Worksheet
Curated OER

T-Angling with Words

For Students 10th
In this geometry roots worksheet, 10th graders solve and complete 22 various types of problems. First, they match the geometry word roots on the left with their meanings found on the right side. Then, students list as many other geometry...
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Worksheet
Curated OER

Congruent Figures

For Students 3rd - 5th
In this congruent figure worksheet, students select the shape in a row that is congruent with the shape that begins that row, 4 rows total.
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Worksheet
Curated OER

Geometry - Congruent Figures

For Students 1st - 3rd
In this geometry worksheet, students see two congruent figures. They match the corresponding parts by writing their labels in the 3 boxes at the bottom of the page.
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Worksheet
Curated OER

Geometry

For Students 4th - 5th
In this congruent figures learning exercise, students analyze a geometric shape and choose from the answer box any figures that are congruent to that shape. There are 3 problems.
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Worksheet
Curated OER

Problem-Solving Strategy: Act It Out Word Problems

For Students 4th - 5th
In this congruent shapes worksheet, students determine if they can us the five figures to form a figure congruent to the rectangle. Students follow the steps to solve the problem: understand, plan, solve, and look back.
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Worksheet
Curated OER

Math Terms- Congruent, Integer, Extrapolation, Exponent

For Students 6th - 8th
In this math terms instructional activity, middle schoolers answer 4 multiple choice questions about the meaning of congruent, extrapolation, exponents, and integers.
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Worksheet
Curated OER

Circle Proofs

For Students 10th
In this circle proofs worksheet, 10th graders complete 4 different problems that include circle proofs. They respond to each of the questions that deal with circle proofs. Then, students read the given information and use the circle...
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Lesson Plan
Curated OER

Congruent Coloring

For Teachers 1st
In this mathematics worksheet, 1st graders find the pairs of polygons that are congruent on the sheet. Then they color them the same color and use their ruler to check their selections.
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Lesson Plan
Curated OER

TAAS Attack Daily Upkeep #7

For Teachers 5th
In this word problem worksheet, 5th graders review various mathematical terms by selecting the correct letter that answers each question completely. There are a total of 13 math problems to solve which vary between word problems,...
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Lesson Plan
Curated OER

Math: Congruent and Similar Figures

For Teachers 8th
Eighth graders use geo-boards to create similar and congruent figures and find their corresponding sides. Using the geo-board paper, they draw the shapes they create on the geo-boards. With partners,students create similar and congruent...