Lesson Plan
Curated OER

Geometry and Shapes

For Teachers 4th
Fourth graders are asked to name different shapes.Four to five students to share their answers with the class. The teacher leads the discussion in geometry about the properties associated with shapes.
Lesson Plan
Curated OER

Marshmallow Geometry

For Teachers 3rd
Third graders create 2D and 3D shapes using marshmallows and toothpicks. For this geometry lesson, 3rd graders create their shapes and document the number of faces, edges, corners, angles, and sides. They share one shape and its...
Lesson Plan
Curated OER

Find the Shape

For Teachers 4th - 5th
Students identify points on the coordinate plane using ordered pairs and also plot the ordered pairs on the coordinate plane. They also use properties of shapes to identify polygons such as triangles and quadrilaterals (square,...
Organizer
Curated OER

Triangle Angle-Sum Theorem

For Students 5th - 8th
In this polygons worksheet, students fill out a graphic organizer about the name of the polygon, the number of sides, the angle sums, and more. Students complete this for 5 polygons.
Lesson Plan
Curated OER

Anticipation/Reaction Guides and Discussion Groups

For Teachers 7th
Seventh graders study geometric shapes around the classroom. In this geometry lesson plan, 7th graders discuss their answers in groups to the Anticipation/Reaction guide handout. Students complete the reaction side of the guide and...
Lesson Plan
Curated OER

Geometry: Area

For Teachers 2nd - 6th
Students visit various websites to calculate the area of circles, triangles, rectangles, trapezoids, and parallelograms. They explore math problems and play interactive games dealing with geometry.
Lesson Plan
Curated OER

Tiling the Plane

For Teachers 2nd - 3rd
Learners use pattern blocks and triangular grid paper to review shape names, be introduced to the concept of a tiling of the plane, and determine which pattern blocks tile the plane. They are asked: "Have you ever seen a floor or a wall...
Lesson Plan
Curated OER

Looking For Triangles

For Teachers 8th - 10th
Students solve problems with triangles. In this geometry lesson, students analyze shapes to find different triangles. They name the shapes created by putting triangles together.
Lesson Plan
Curated OER

Areas of triangles, trapezoids, and rhombi

For Teachers 10th - 12th
Young scholars solve geometry problems. In this area and perimeter lesson, students use formulas to solve problems from the textbook. 
Lesson Plan
Virginia Department of Education

Similar Figures

For Teachers 7th
How similar do figures have to be to be similar figures? Individuals learn to identify similar figures by verifying that angles are congruent and sides are proportional. Additionally, they match the corresponding parts of similar figures.
Lesson Plan
Curated OER

Area and Perimeter

For Teachers 10th
Learners find the area and perimeter of regular polygons and composite figures and examine the effect on the area and perimeter of a figure if the dimensions are multiplied by a constant. The nine page worksheet contains thirty-seven...
Lesson Plan
Curated OER

Angle Exploration and Classification

For Teachers 4th - 7th
Students compare and contrast angles and identify them as acute, obtuse, right, or straight angles. They create rays and angles using uncooked spaghetti, read and discuss key vocabulary terms, and complete a variety of geometry worksheets.
Lesson Plan
Curated OER

The Quirky Quadrilateral

For Teachers 4th
Fourth graders identify and classify different triangles and quadrilaterals. Then they demonstrate an understanding of plane and solid geometric objects and use this knowledge to show relationships and solve specific problems. Students...
Lesson Plan
Curated OER

Navajo Yei

For Teachers K
Students explore geometry in Navajo culture. In this geometry lesson, students search for different geometrical shapes in Navajo art. Students then create their own rug or jewelry design using geometrical shapes.
Lesson Plan
Curated OER

"Sir Cumference and the First Round Table" by Cindy Neuschwander

For Teachers 4th - 6th
Students analyze characteristics of various 2 dimensional shapes and explore their properties and use various vocabulary terms to discuss geometric relationships.
Lesson Plan
Curated OER

Shapetown

For Teachers Pre-K - 2nd
Students identify basic geometric shapes. In this geometry lesson, students read the book Shapetown and identify the various shapes from the story. Students are given a sheet and draw part of a town using only shapes.
Lesson Plan
Curated OER

Properties of Reflections

For Teachers 9th - 10th
Students perform transformation on their polygons. In this geometry lesson, students identify the correct transformation of each shape. They move the polygons around on a coordinate plane. There are extension and homework activities...
Lesson Plan
Curated OER

Complex Area Problems

For Teachers 9th - 11th
Students calculate the area of different polygons. In this geometry lesson, students find the area of complex polygons. They solve word problems using rates and distances.
Lesson Plan
Curated OER

"The Greedy Triangle" by Marilyn Burns

For Teachers 4th - 6th
Students discover which regular polygons can be used to tile a plane.
Lesson Plan
Curated OER

NON-EUCLIDEAN GEOMETRY.

For Teachers 8th - 9th
Students study relationships between angles, side lengths, perimeters, areas and volumes of similar objects. In this lesson students also create and critique inductive and deductive arguments concerning congruency, similarity and the...
Worksheet
Curated OER

Geometry Maze and Coloring Sheet

For Students 3rd
In this geometry coloring maze worksheet, 3rd graders color a path of rectangles to help a dog ( pictured) to find his way to the dog house. They choose the rectangles out of other geometric shapes such as stars, oval, triangles,...
Lesson Plan
Curated OER

Getting It Right! An Investigation of the Pythagorean Theorem

For Teachers 6th - 8th
Learners construct a variety of right triangles using a right-angled set square, cutting corners from pieces of paper or cardboard, and using dynamic geometry software. They measure the sides of these various right triangles and record...
Lesson Plan
Math by Design

Transformations – Reflections

For Teachers 7th - 8th Standards
Scholars use interactive resources to figure out how to mathematically draw a reflection of a geometric shape viewed in a mirror. To conclude the activity, class members are asked to deduce the result of multiple reflections across...
Lesson Plan
Think Map

Know Your Polygons!

For Teachers 3rd - 5th Standards
Shape shifters recognize characteristics of polygons. Embracing language arts skills in addition to math, they use a thesaurus to pinpoint specific attributes of a set of polygons. They also participate in a 21-question guessing game...