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Lesson Plan
Curated OER

Basic Geometric Constructions

For Teachers 7th - 9th
Students observe and demonstrate a variety of basic geometric constructions using the Triman Safety Compass. Using the compass, they draw circles, bisect a line segment, construct an angle, bisect an angle, copy an angle, and create...
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Lesson Plan
EngageNY

Informal Proofs of Properties of Dilations

For Teachers 8th Standards
Challenge the class to prove that the dilation properties always hold. The activity develops an informal proof of the properties of dilations through a discussion. Two of the proofs are verified with each class member performing the...
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Lesson Plan
Curated OER

Joseph Stella Art: Line Designs

For Teachers 1st - 5th
Students discover the focal point in pictures and create their own images using lines and space.  In this art analysis lesson, students create a black dot on a white paper which becomes a focal point for the lines the student will paint...
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Lesson Plan
EngageNY

How Do Dilations Map Lines, Rays, and Circles?

For Students 9th - 10th Standards
Applying a learned technique to a new type of problem is an important skill in mathematics. The lesson asks scholars to apply their understanding to analyze dilations of different figures. They make conjectures and conclusions to...
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Worksheet
Curated OER

Geometry

For Students 7th - 8th
In this line and angles worksheet, students explore basic geometry vocabulary.  They classify polygons.  Students determine the area and perimeter of given shapes.  They examine the parts of a circle, find volume and surface area of...
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Lesson Plan
Curated OER

Concurrent Lines in Triangles

For Teachers 9th - 12th
High schoolers explore the concept of concurrent lines in triangles. In this concurrent lines in triangles lesson, students work in groups to investigate properties of concurrent lines in acute, right, and obtuse triangles. High...
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Unit Plan
Curated OER

Transformations in the Coordinate Plane

For Teachers 9th - 12th Standards
Your learners connect the new concepts of transformations in the coordinate plane to their previous knowledge using the solid vocabulary development in this unit. Like a foreign language, mathematics has its own set of vocabulary terms...
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Printables
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Houghton Mifflin Harcourt

Unit 5 Math Vocabulary Cards (Grade 6)

For Students 6th Standards
Acute angle, line of symmetry, and vertex are a few terms you'll find in a set of 90 flashcards designed to reinforce math vocabulary. Included in the set are two types of cards; a word card printed in bold font, and a definition card...
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Worksheet
Curated OER

Segments and Rays Homework

For Students 9th - 10th
In this geometry worksheet, students identify segments and rays using sketches. They sketch intersection to a plane and describe the relationship of the segment and ray as it related to the intersection. There are 15 questions.
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Lesson Plan
Curated OER

Geometry in the Real World

For Teachers 8th
Eighth graders complete a unit of lessons on basic geometry concepts. They participate in a variety of activities, culminating in a project that involves publishing a booklet or a poster that presents the major geometry concepts from the...
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Worksheet
Curated OER

Exploring Angles

For Students 10th
In this exploring angles activity, 10th graders solve 12 various types of problems that are related to measuring various angles. First, they name the vertex of an angle and determine whether it appears to be acute, obtuse, right, or...
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Lesson Plan
Curated OER

The Undefined Terms of Geometry

For Teachers 10th
Tenth graders define terminologies related to geometry. In this geometry lesson, 10th graders discuss undefined terms, line segment and ray. They answer the question, how many points it takes to make a line.
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Lesson Plan
Curated OER

Folding to Make Shapes

For Teachers 2nd
Second graders identify different polygons and their attributes. In this geometry instructional activity, 2nd graders get to know polygons by studying the vocabulary and finding polygons in their classroom. They create these shapes and...
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Lesson Plan
Curated OER

Basic Geometry Ideas and Angle Measurement

For Teachers 7th
Seventh graders explore the concept of basic geometry. In this basic geometry lesson, 7th graders identify the correct picture for a given vocabulary word such as midpoint, line, ray, or parallel lines. Students discuss examples of...
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Lesson Plan
Curated OER

Which Way Do I Go? (Identifying Angles)

For Teachers 5th
Fifth graders practice the concepts related to finding and identifying different angles. There are examples included in the lesson that are useful for the teacher to deliver the lesson.
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Lesson Plan
Curated OER

Angles: Angles, Angles, Everywhere

For Teachers 6th - 8th
Students estimate and accurately measure the size of angles communicate with the appropriate geometric terms and symbols to describe and name angles, lines, line segments, rays
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Lesson Plan
Curated OER

Identifying Figures

For Teachers 6th - 10th
In this identifying figures worksheet, learners match 10 figures to the correct vocabulary terms that include lines, angles, shapes, and segments.
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Lesson Plan
Curated OER

Mr. Bo Jangle, What's Your Angle?

For Teachers 3rd
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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Unit Plan
Mathematics Vision Project

Circles: A Geometric Perspective

For Teachers 10th - 12th Standards
Circles are the foundation of many geometric concepts and extensions - a point that is thoroughly driven home in this extensive unit. Fundamental properties of circles are investigated (including sector area, angle measure, and...
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Lesson Plan
EngageNY

Dividing the King’s Foot into 12 Equal Pieces

For Students 9th - 10th Standards
Apply, apply, apply! A measurement lesson applies a number of concepts to help learn a new construction. Scholars learn to divide a segment into n equal parts using a method that uses the Side Splitter Theorem and a method that applies...
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Printables
Houghton Mifflin Harcourt

Unit 6 Math Vocabulary Cards (Grade 3)

For Teachers 3rd
A set of 49 math vocabulary cards ranges from angle to irregular polygon to parallel lines. Each sheet contains two cards: one with the word printed in bold text and the other with the definition.
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Lesson Plan
Curated OER

Exploring Geometric Patterns and Relationships

For Teachers 6th
Sixth graders explore different geographic relationships in like drawing lines, rays, and parallelograms. This lesson could be used for review because it covers more than one concept. The students should have prior knowledge.
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Unit Plan
Mathematics Vision Project

Geometric Figures

For Teachers 10th - 12th Standards
Logical thinking is at the forefront of this jam-packed lesson, with young mathematicians not only investigating geometric concepts but also how they "know what they know". Through each activity and worksheet, learners wrestle with...
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Lesson Plan
Curated OER

Lines and Angles

For Teachers 4th - 5th
Students explore Geometry with Twizzlers Candy, pipe cleaners, paper, pencils, and protractors. They manipulate these items to create different angles introduced by the teacher.

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