Ratios,Proportions, & Geometric Means 
10th 
Eng 

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Teacher: Pederson, IDA CROWN JEWISH ACADEMY, Chicago, Illinois
Description: This lesson reviews ratios and proportions and then discusses finding the geometric mean between two numbers.

Geometric Constructions 
10th 
Eng 

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Teacher: Kelly, Shalhevet High School for Girls, Valley Stream, Alabama
Description: How to use a protractor and straightedge to make geometric constructions.

Geometry/ Shapes 
2nd 
Eng 

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Teacher: Barros, Magen David Yeshivah, Brooklyn, Alabama
Description: Learning Goal: We are learning to identify three dimensional shapes by recognizing its attributes.

Funkytown Fun House 
3rd 
Eng 

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Teacher: Harris, Sager Solomon Schechter Day School of Metropolitan Chicago, Northbrook, Illinois
Description: Ratio review

Introduction to Circle Equations 
10th 
Eng 

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Teacher: O'Connor, Temima High School, Atlanta, Alabama
Description: Introduction of Circle Equation and its components; Multiple uses and examples for writing circle equations.

Angle Relationship 
9th 
Eng 

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Teacher: Levine, Robert M. Beren Academy, Houston, Alabama
Description: Geometry lesson on Angle relationships for 9th and 10th grade students. Relationships include linear pair, adjacent angles, vertical angles, perpendicular angles and different types of angles.

Let's explore patterns 
1st 
Eng 

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Teacher: Williams, Sinai Akiba Academy, Los Angeles, California
Description: The students will copy, create, and extend patterns.

Basic Constructions 
10th 
Eng 

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Teacher: Borroni, DRS Yeshiva  HALB, Woodmere, New York
Description: It allows the students to contract certain geometric objects by using the interactive compass from the tools in Smart Notebook.

Double Angle Formula 
9th 
Eng 

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Teacher: Borroni, DRS Yeshiva  HALB, Woodmere, New York
Description: Derive the formulas for sin2A and cos2A
Apply the formulas for sin2A and cos2A in numerical applications
Apply the formulas for sin2A and cos2A in proving identities

Congruent Triangles 
10th 
Eng 

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Teacher: Borroni, DRS Yeshiva  HALB, Woodmere, New York
Description: How do we identify corresponding parts in congruent triangles and use them in proofs?

Area and Perimeter Word Problems 
10th 
Eng 

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Teacher: Vitchers, HALB  DRS Yeshiva High School, Woodmere, New York
Description: Students will learn the steps needed for solving area and perimeter word problems.

Proving Triangles Congruent 
9th 
Eng 

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Teacher: Gershon, Solomon Schechter Day School of Metropolitan Chicago, Northbrook, Illinois
Description: This lesson is a geometry SMART RESPONSE question set to check that students have attained fluency in proving triangles congruent using various method. Lesson can be used with or without The SMART Response system pages.

3D shapes 
4th 
Eng 

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Teacher: Mishiev, East Midwood Hebrew Day School, Brooklyn, New York
Description: This lesson is designed for the 4th grade level. At the end of the lesson students will be able to name, describe, compare, and sort threedimensional shapes.

Area vs Perimeter 
3rd 
Eng 

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Teacher: Sheldon, Bais Yaakov of Queens, New York, New York
Description: In this lesson, students will learn to understand the difference between area and perimeter.

Construction of a congruent segment and a congruent angle 
8th 
Eng 

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Teacher: Mishiev, East Midwood Hebrew Day School, Brooklyn, New York
Description: Students will construct a congruent segment and a congruent angle using a straight edge and a compass.

Triangle Inequality Theorems 
9th 
Eng 

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Teacher: Wexler, BAIS YAAKOV High School of Baltimore, Baltimore, Maryland
Description: This lesson presents the theorem that two sides of a triangle must be greater than the third side.

Polygons and properties 
6th 
Eng 

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Teacher: Nagel, Barkai Yeshivah, Brooklyn, New York
Description: Define polygons, name figures that are polygons. Name different types of triangles.

Area of a circle 
6th 
Eng 

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Teacher: Cooper, Greenfield Hebrew Academy, Atlanta, Georgia
Description: Students will discover the formula for the area of a circle and practice finding the area of a circle using the formula.

Parallel lines cut by a Transversal 
8th 
Eng 

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Teacher: fleisher, Shulamith middle School, Brooklyn, New York
Description: This lesson includes definitions and activities dealing with the relationships of the angles made by parallel lines that are cut by a transversal.

Area of Triangles and Quadrilaterals 
6th 
Eng 

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Teacher: Benn, Yeshivat Rambam, Baltimore, Maryland
Description: Students will be able to see the relationship between the areas of triangles and the various quadrilaterals.

Polygons 
3rd 
Eng 

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Teacher: Thomaswick, Ezra Academy, Woodbridge, Connecticut
Description: Students will sort shapes and name shapes.

3 special triangles 
10th 
Eng 

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Teacher: Lanner, Weinbaum Yeshiva High School, Boca Raton, Florida
Description: This lesson portrays the 3 special triangles, equilateral, 454590, and 306090.

Angles and Polygons 
5th 
Eng 

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Teacher: Orlanski, Yeshiva of Central Queens, Flushing, New York
Description: In this lesson, students will learn the properties of angles and polygons.

Interior & Exterior angles of a triangle 
10th 
Eng 

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Teacher: Lanner, Weinbaum Yeshiva High School, Boca Raton, Florida
Description: The goal of this lesson is to list the 3 types of triangles that exist, as classified by their angles, as well as to explain the relationship between the interior angles and exterior angles.

Sin, Cosine, Tangent 
10th 
Eng 

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Teacher: Lanner, Weinbaum Yeshiva High School, Boca Raton, Florida
Description: The goal of this lesson is to provide the definitions for the sin,cosine and tangent of an angle. This lesson will only focus on the acute angles of a triangle.

Quadrilaterals 
5th 
Eng 

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Teacher: Vinikoor, Arie Crown Hebrew Day School, Skokie, Illinois
Description: This lesson reviews the various types of Quadrilaterals.

polygons 
8th 
Eng 

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Teacher: Toth, SOLOMON SCHECHTER DAY SCHOOL OF GREATER MONMOUTH COUNTY, marlboro, New Jersey
Description: This lesson reviews the definition and descriptions of polygons using visuals and word definitions.

Diagonals of Polygons 
6th 
Eng 

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Teacher: Wiesel, Rosenbaum Yeshiva of North Jersey, Bergenfield, New Jersey
Description: This lesson explores the geometric definition of a diagonal. Students draw the diagonals on the polygons and find a formula that relates the sides of the figure to the number of diagonals

Reflections in coordinate geometry 
7th 
Eng 

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Teacher: Nagel, East Midwood Hebrew Day School, Brooklyn, New York
Description: This lesson forcuses on Reflection points and triangles across the xaxis and yaxis

3D Shape Riddles 
3rd 
Eng 

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Teacher: Wiesel, Rosenbaum Yeshiva of North Jersey, Bergenfield, New Jersey
Description: Students write and solve each other's riddles related to spatial relationships of 3d geometric shapes

Stick Polygons 
8th 
Eng 

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Teacher: Blickenstaff, Tucson Hebrew Academy, Tucson, Arizona
Description: This lesson helps students discover the Triangle Inequality Theorem.

Lines, Rays and Line Segments 
4th 
Eng 

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Teacher: Faer, Pardes Jewish Day School, Phoenix, Arizona
Description: An introduction to 4th grade geometry terms relating to parallel lines, line segments, rays, lines and intersecting lines. This lesson includes a matching game at the end of the lesson.

Geometric Solids 
1st 
Eng 

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Teacher: Newman, Solomon Schechter Day School of Essex and Union, West Orange, New Jersey
Description: The goal of this lesson is to help students understand the concept of geometric solids.

Corresponding Equal and Supplementary Angles 
4th 
Eng 

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Teacher: Teich, Arie Crown Hebrew Day School, Skokie, Illinois
Description: Students will identify pairs of corresponding equal angles and pairs of supplementary angles in a diagram of two parallel lines intersected by a transversal line.

Introduction to geometry primary grades. 
1st 
Eng 

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Teacher: Bonder, Solomon Schechter Day School of Essex and Union, West Orange, New Jersey
Description: Students will use a variety of math manipulatives to build their basic understanding of geometry concepts of sides, angles, congruence, and symmetry.

The sum of the interior angles of a polygon 
7th 
Eng 

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Teacher: Nagel, East Midwood Hebrew Day School, Brooklyn, New York
Description: this lesson teaches children about interior angles of any polygon with "n" sides and how to find the sum of the angles.

Tessellations 
4th 
Eng 

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Teacher: Teich, Arie Crown Hebrew Day School, Skokie, Illinois
Description: Students will study examples of tessellations and by arranging small models of polygons, see if they will tessellate. Students will record results on charts.

Introuction to Locus _revised 
10th 
Eng 

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Teacher: Pasetsky, SOLOMON SCHECHTER DAY SCHOOL OF NASSAU COUNTY High School, Glen Cove, New York
Description: Introducing the concept of locus  finding points that satisfy given conditions. Examples of points a given distance from a fixed point, points equidistant from 2 given lines and a given distance from a fixed point.

Area 
6th 
Eng 

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Teacher: Cooper, Greenfield Hebrew Academy, Atlanta, Georgia
Description: Understand and Find the area of Rectangles and Parallelograms

Volume 
7th 
Eng 

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Teacher: Cooper, Greenfield Hebrew Academy, Atlanta, Georgia
Description: Find the Volume of Prisms and cylinders

Surface Area 
7th 
Eng 

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Teacher: Cooper, Greenfield Hebrew Academy, Atlanta, Georgia
Description: Find the surface area of prisms and cylinders

Angles 
10th 
Eng 

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Teacher: Brodsky, YESHIVA UNIVERSITY HIGH SCHOOL FOR GIRLS, Holliswood, New York
Description: Introduction to Angles.

Altitude to Hypotenuse Theorems 
10th 
Eng 

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Teacher: Pederson, IDA CROWN JEWISH ACADEMY, Chicago, Illinois
Description: This lesson looks at the relationships that are formed when you draw an altitude to the hypotenuse.

Area of Parallelogram 
8th 
Eng 

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Teacher: Robinson, MANHATTAN DAY SCHOOL, New York, New York
Description: Mrs. Miryam Alter
Manhattan Day School
Discovering the area of the parallelogram
Look at the parallelogram. Cut off the triangle on the right. Move it and attach it to the parallelogram on its left. Proof that the area of a parallelogram is base

Congruence & Similarity 
4th 
Eng 

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Teacher: Teich, Arie Crown Hebrew Day School, Skokie, Illinois
Description: Students will compare two geometric figures to see if they are congruent, similar, or neither and then label them. Students will construct congruent figures using a ruler and a protractor.

Geometry 
7th 
Eng 

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Teacher: Moeller, YESHIVA KETANA OF QUEENS, Flushing, New York
Description: This lesson discusses area and includes a quiz to ensure students understand topic.

Polygons 
8th 
Eng 

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Teacher: Brodsky, YESHIVA UNIVERSITY HIGH SCHOOL FOR GIRLS, Holliswood, New York
Description: Introduction to Polygons, including the Polygon Sum Theorem

The Greedy Triangle 
3rd 
Eng 

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Teacher: Tarasova, East Midwood Hebrew Day School, Brooklyn, New York
Description: Students will work with literature, handson mathematics, and smartboard to investigate polygons and their characteristics.

Classification of Polygons 
4th 
Eng 

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Teacher: Tarasova, East Midwood Hebrew Day School, Brooklyn, New York
Description: Students will be able to classify polygons including triangles and quadrilaterals. The lesson contains an interactive quiz.

Angles 
7th 
Eng 

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Teacher: Robinson, MANHATTAN DAY SCHOOL, New York, New York
Description: Mrs. Alter's lesson on angles!

Angles of Elevation and Depression 
11th 
Eng 

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Teacher: Wexler, BAIS YAAKOV High School of Baltimore, Baltimore, Maryland
Description: Examine reallife applications of right triangles using trigonometry.

Pythagorean Theorem 
10th 
Eng 

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Teacher: Wexler, BAIS YAAKOV High School of Baltimore, Baltimore, Maryland
Description: Use Pythagorean Theorem to determine if a triangle is a right triangle and to determine missing sides of a right triangle.

Space Figures: Faces, Edges, & Vertices 
5th 
Eng 

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Teacher: Teich, Arie Crown Hebrew Day School, Skokie, Illinois
Description: Students will count the number of faces, edges, and vertices on three different space figures (solid geometry 3D figures) and enter the information on a chart.

pythagorean theorem 
8th 
Eng 

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Teacher: Nagel, East Midwood Hebrew Day School, Brooklyn, New York
Description: what is the Pythagorean Theorem and how do we use it?

Applications of Similar Triangles 
10th 
Eng 

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Teacher: Wexler, BAIS YAAKOV High School of Baltimore, Baltimore, Maryland
Description: Students will explore the properties of similar triangles using real life data, including calculating the heights of tall objects based on their shadows.
