Unit Plan
PBS

Accessible Shapes

For Teachers 6th - 8th Standards
All the 2-D and 3-D measurement work you need is in one location. Divided into three sections, the geometry lesson plans consist of visualization of three dimensions, classifying geometric figures, and finding surface area and volume....
Lesson Plan
EngageNY

Criterion for Perpendicularity

For Students 9th - 12th Standards
The Pythagorean Theorem is a geometry pupil's best friend! Learners explain the equation a1b1 + a2b2 = 0 for perpendicular segments using the Pythagorean Theorem. They are able to identify perpendicular segments using their...
Lesson Plan
Curated OER

Angle Relationships

For Teachers 10th
Tenth graders explore the angle relationships that exist when two lines intersect. In this geometry lesson, 10th graders estimate the measure of given angles and use their graphing calculator tools. Students use this knowledge to find...
Worksheet
Curated OER

Symmetry

For Students 2nd - 3rd
In this recognizing symmetrical figures worksheet, students identify objects that are symmetrical and trace the line of symmetry. Students solve five problems.
Worksheet
Curated OER

Challenge: Skills and Applications Lesson 3.3

For Students 9th - 12th
In this angle measures learning exercise, high schoolers solve 9 short answer problems. Students find values for x and y given two parallel lines cut by a transversal. High schoolers use alternate interior, supplementary, and exterior...
Worksheet
Mt. San Antonio Collage

Postulates, Angles, and Their Relationships

For Students 8th - 11th Standards
More than a worksheet, learners go through geometry topics example by example on the nicely organized handout. From postulates to classifying angles, there are rules and examples provided for each topic. The ten pages of problems...
Worksheet
Mt. San Antonio Collage

Circles

For Students 9th - 12th Standards
Don't circle around the topic, but get right to the center with tons of practice regarding circles in geometry. The note-incorporated activity provides guided practice through many topics such as central angles, inscribed polygons...
Lesson Plan
Curated OER

Exploring Special Lines

For Teachers 9th - 10th
Students compare and order numbers. In this geometry lesson plan, students write equations for inequalities. They differentiate and apply concepts of triangular properties to solve problems.
Lesson Plan
Curated OER

Concurrent Lines in Triangles

For Teachers 9th - 12th
Learners 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. Learners use a...
Lesson Plan
Curated OER

Secant Line Approximation of the Tangent Line

For Teachers 9th - 11th
Learners perform operation with secant and tangent lines. In this calculus lesson, students find the derivative and relate it to the slope of a line. They differentiate between secant and tangent as they intersect a circle, using Cabri.
Lesson Plan
Curated OER

Exploring the Slopes of Parallel and Perpendicular Lines

For Teachers 8th - 10th
Students calculate the slope of parallel and perpendicular lines.In this algebra lesson, students differentiate between parallel and perpendicular lines. They graph their lines using the slope of the equation.
Lesson Plan
Curated OER

Regents High School Examination-Geometry

For Teachers 10th
In this geometry worksheet students assess their knowledge of high school geometry.  The twenty-eight page worksheet contains a combination of thirty-eight multiple choice and constructed response questions.  Answers are provided.
Worksheet
Curated OER

Geometry: Identify Figures Through Segments

For Students 2nd - 4th
In this geometry worksheet, students answer 5 questions, finding shapes using a figure with labeled line segments running through it. A reference website is given for additional resources.
Worksheet
Curated OER

Equation of a Line

For Students 9th
In this equation of a line learning exercise, 9th graders solve 10 different problems that include the equation of a line. First, they determine the equation of a line that has a given slope and passes through a given point on a graph....
Unit Plan
Curated OER

Line Up! Shape Up! Color the World!

For Teachers Pre-K - 1st
Students explore the Elements of Art. In this art lesson, students read the book Katie Meets the Impressionists and brainstorm the different things that artists create. Students observe various elements of art such as line and color and...
Worksheet
Curated OER

Line Reflections

For Students 10th
For this line reflections worksheet, 10th graders solve 10 different problems that include determining different line reflections in images. They identify the line reflections in each of the illustrations shown on the sheet. Then,...
Lesson Plan
Curated OER

Down The Line

For Teachers 8th - 11th
Learnersinvestigate three-dimensional shapes. In this geometry lesson, pupils calculate the volume of cylinders using the given dimensions. They create a formula base don observation before using the real formula.
Lesson Plan
Curated OER

Intersecting Lines and Vertical Angles

For Teachers 9th - 12th Standards
Pupils identify and define intersecting lines and vertical angles. They draw two intersecting lines and measure one pair of vertical angles. Learners will also move a line to change the angles of a figure and describe the changes in the...
Lesson Plan
Curated OER

Perpendicular Bisector of a Line Segment

For Teachers 9th - 12th Standards
High Schoolers investigate the perpendicular bisector of a line segment. They use Cabri Jr. to construct the perpendicular bisector of a segment. The dynamics capabilities of Cabri Jr. allow your learners to observe the lengths of the...
Lesson Plan
Curated OER

Geometry History Lesson

For Teachers 10th
Tenth graders investigate the early history of geometry. In this geometry activity, 10th graders investigate translations, rotations, and reflections. They also solve problems with line of symmetry and rotational symmetry while reviewing...
Worksheet
Curated OER

1st Geometry

For Teachers 3rd - 6th
In this geometry worksheet, students choose the multiple choice answer to 15 questions involving several different elements of geometry.
Lesson Plan
Curated OER

Geometry: Regents Exam

For Teachers 10th
In this geometry worksheet, 10th graders review geometric concept including angles, polygons, quadrilaterals, trig and circles. They take a comprehensive exam covering topics on the Regents exam. There are 32 pages in this booklet.
Worksheet
Curated OER

Points, Lines and Planes

For Students 10th
In this points, lines and planes worksheet, 10th graders solve and complete 9 various types of problems. First, they name the planes that intersect a figure shown. Then, students determine the points that are collinear and coplanar in...
Worksheet
Curated OER

Parallel Lines and Transversals Worksheet

For Students 10th
In this geometry learning exercise, 10th graders investigate angles formed when parallel lines are cut by a transversal. They discuss interior and exterior angles, same side and alternate angles. There are 6 questions.

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