Lesson Plan
Curated OER

A World of Symmetry

For Teachers 6th - 8th
Students identify lines of symmetry.  In this symmetry lesson, students create objects and identify their lines of symmetry.  They answer questions about lines of symmetry.  Students cut shapes out of cookie dough and...
Lesson Plan
Curated OER

Mirror Symmetry/Mirror Images

For Teachers 5th - 6th
Students explore lines of symmetry in geometric shapes. In this geometry instructional activity, students construct angles using mirrors and rubberbands, then predict the number of images that will appear in the reflection. Students...
Worksheet
Curated OER

Beyond the Blue Horizon...Advanced

For Students 9th - 12th
In this calculating the horizon worksheet, students solve 6 problems using algebra, derivatives and calculus to find the formula for the line-of-sight horizon, the distance along a planet, the horizon distance and the rates of change for...
Lesson Plan
Curated OER

Pyramid Activity

For Teachers 8th - 12th Standards
Pupils explore the concept of pyramids. They determine if two sides of a pyramid are perpendicular using a graphing calculator, then discuss parallel and perpendicular lines and how to determine if two lines are parallel or...
Worksheet
Curated OER

Solving Linear Systems

For Students 9th
In this linear systems worksheet, 9th graders solve and complete 24 different problems that include solving various linear systems. First, they read through each example and define the two methods described for solving linear systems of...
Lesson Plan
Curated OER

Secrets of Painting

For Teachers K - 4th
Learners explore colors and shapes. In this art concepts instructional activity, students discuss shapes, lines, and color while creating a variety of abstract designs. The instructions for several art activities are provided. Basic art...
Worksheet
Curated OER

Tangent Lines

For Students 10th
In this tangent lines worksheet, 10th graders solve and complete 13 various types of problems. First, they solve the right triangles for the variables shown. Then, students name a radius, a diameter, a tangent, a secant, a point of...
Lesson Plan
Curated OER

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

Line Symmetry

For Students 10th
In this line symmetry instructional activity, 10th graders solve 10 different problems related to various forms of line symmetry. They classify each line of symmetry illustrated as horizontal, vertical, both, or neither. Then students...
Worksheet
Curated OER

Motions In Geometry

For Students 8th - 10th
For this motions in geometry worksheet, students draw translations, rotations, and reflections. This three-page worksheet contains examples, instructions, and 6 problems. The last page contains answers.
Lesson Plan
Curated OER

Review Geometry - Week 8: (Triangles)

For Teachers 10th - 12th
In this triangle worksheet, students determine the length of the sides of a triangle, perpendicular lines, and the area of triangles. This two-page worksheet contains eight problems.
Interactive
Curated OER

Proving Lines Parallel Multiple Choice

For Students 10th - 12th
In this geometry worksheet, students identify parallel lines, examine and interpret diagrams, and find the value of corresponding angles and lines.  This one-page worksheet contains 6 multiple-choice problems.  Answers are...
Worksheet
Curated OER

Review of Geometry I

For Students 7th - 10th
In this review worksheet, students identify the characteristics of intersecting and parallel lines  They explore vertical, supplementary, alternate interior, alternate exterior  and corresponding angles.  This...
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 plan asks scholars to apply their understanding to analyze dilations of different figures. They make conjectures and conclusions...
Lesson Plan
EngageNY

Special Lines in Triangles (part 1)

For Students 9th - 10th Standards
Allow your pupils to become the mathematicians! Individuals explore the properties of a midsegment of a triangle through construction and measurement. Once they figure out the properties, learners use them to draw conclusions.
Lesson Plan
EngageNY

Mid-Module Assessment Task - Geometry (Module 1)

For Teachers 9th - 10th Standards
How do you prepare class members for the analytical thinking they will need in the real world? An assessment requires the higher order thinking they need to be successful. The module focuses on the concept of rigid transformations...
Lesson Plan
EngageNY

Special Lines in Triangles (part 2)

For Teachers 9th - 10th Standards
Medians, midsegments, altitudes, oh my! Pupils study the properties of the median of a triangle, initially examining a proof utilizing midsegments to determine the length ratio of a median. They then use the information to find missing...
Unit Plan
Mathematics Vision Project

Module 1: Transformations and Symmetry

For Teachers 9th - 12th Standards
No need to change anything about the resource. The first of eight modules in the MVP Geometry unit focuses on transformations in the coordinate plane. It connects translations, rotations, and reflections to congruence, symmetry, and...
Assessment
Curated OER

Expressing Geometric Properties with Equations

For Students 9th - 11th Standards
Algebra and geometry are not interchangeable. Demonstrate why not with a series of problems that deal with the equations of circles and equations of lines that meet specific criteria. 
Assessment
EngageNY

Mid-Module Assessment Task - Geometry (Module 2)

For Students 9th - 10th Standards
Challenge: create an assessment that features higher level thinking from beginning to end. A ready-made test assesses knowledge of dilations using performance tasks. Every question requires a developed written response. 
Assessment
Inside Mathematics

Quadrilaterals

For Teachers 9th - 12th Standards
What figure is formed by connecting the midpoints of the sides of a quadrilateral? The geometry assessment task has class members work through the process of determining the figure inscribed in a quadrilateral. Pupils use geometric...
Lesson Plan
Virginia Department of Education

Constructions

For Teachers 9th - 11th Standards
Pupils learn the steps for basic constructions using a straightedge, a compass, and a pencil. Pairs develop the skills to copy a segment and an angle, bisect a segment and an angle, and construct parallel and perpendicular lines.
Lesson Plan
Curated OER

Geometry/Math A Regents Questions: Angle Bisectors

For Teachers 9th - 12th
In this angle bisector worksheet, students solve five short answer and multiple choice problems. Students construct angle bisectors using a compass.
Lesson Plan
Virginia Department of Education

Angles, Arcs, and Segments in Circles

For Teachers 9th - 11th Standards
Investigate relationships between angles, arcs, and segments in circles. Pupils use geometry software to discover the relationships between angles, arcs, and segments associated with circles. Class members use similar triangles to...

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