Lesson Plan
Curated OER

Sketching Spheres

For Teachers 8th - 10th
Students investigate spheres through sketches. In this geometry lesson, students sketch two and three dimensional shapes creating nets. They find and differentiate between the nets for prisms, pyramids, cones, cylinders and spheres.
Lesson Plan
Curated OER

Faces of a Cube

For Teachers 1st - 3rd
Young scholars identify and correctly name three-dimensional solids; cones, spheres, and cubes. In this three-dimensional figures lesson, students  build a cube by matching colored square faces to a correct word. Young...
Lesson Plan
Pennsylvania Department of Education

Creating Polygons

For Teachers Pre-K - 2nd
Students describe, make and compare polygons. For this creating polygons lesson, students identify properties of quadrilaterals and describe common features of two dimensional shapes.
Lesson Plan
Curated OER

Area of Tangram Pieces

For Teachers 3rd - 4th
Mathematicians calculate the area of a tangram piece without using formulas. They use a geometry journal to record activities during this instructional activity. They make a set of tangrams and use them to...
Lesson Plan
Curated OER

Reflections

For Teachers 5th
Fifth graders create a reflection of a poygon using a Mira. They discover that a line connecting a vertiex of a polygon and the corresponding vertex of its reflection is perpendicular to the line of reflection. Students create a glide...
Lesson Plan
Curated OER

They're Everywhere! They're Everywhere!

For Teachers 7th - 12th
Students gain an appreciation of the polygons and polyhedrons around them that make their world one of order and strength. They build polygons and polyhedrons, and then construct airplanes out of polygons.
Lesson Plan
Curated OER

Polygons Defined

For Teachers 4th
Fourth graders explore polygons. For this polygon lesson, 4th graders sort polygons according to their properties. Students discover the connection between polygons and the Greek language.
Lesson Plan
Curated OER

Polygons

For Teachers 4th
Fourth graders identify and describe lines, shapes, and solids using formal geometric language. They use Inspiration to create a graphic organizer and outline of polygons.
Lesson Plan
Curated OER

I Am Special and You Are Special Too

For Teachers Pre-K
Pre-schoolers identify things that make them a special individual. For this diversity lesson, they read the book Little Gorilla and discuss ways they are special and unique. Children create a birthday party for "Little Gorilla" and...
Lesson Plan
Curated OER

Sorting and Classifying

For Teachers 5th
Fifth graders are engaged in sorting and classifying geometric shapes of various colors and sizes. They discuss the properties of these shapes and illustrate a range of classifications using Venn diagrams.
Lesson Plan
Curated OER

Regular Polygons

For Teachers 5th
Fifth graders explore polygons. For this math lesson, 5th graders find examples of regular polygons in the classroom and measure the sides of figures to determine if they are regular polygons.
Lesson Plan
Curated OER

Polygons and Plane Figures

For Teachers 4th - 6th
Young scholars choose a polygon to define and describe, and use Power Point and the Internet to present their polygon.
Lesson Plan
Curated OER

Geo Jammin' By DeSign - Day 3, Lesson 16: The ABC of Symmetry

For Teachers 2nd - 3rd
Students follow directions in the ABC of Symmetry to make a butterfly which shows a line of symmetry.
Lesson Plan
Curated OER

The Plane! The Plane!

For Teachers 5th
Fifth graders work with polygons.
Lesson Plan
Alabama Learning Exchange

Polygon Perimeters

For Teachers 3rd Standards
What are polygons? Learners find the perimeter of various geometric figures that the teacher has drawn in chalk on the sidewalk. A worksheet to record their measurements is provided. Get your third graders outside and exploring the world...
Lesson Plan
Pennsylvania Department of Education

Making Cubes

For Teachers 3rd
Third graders explore vocabulary associated with three dimensional figures.  In this transformations instructional activity, 3rd graders create two dimensional nets for three dimensional figures.  Students become familiar with...
Lesson Plan
Pennsylvania Department of Education

Length and Perimeter

For Teachers 3rd
Third graders explore tessellations and the spatial concepts used in creating them.  In this tessellations lesson, 3rd graders rotate, reflect and transform shapes to create tessellations.  Students become familiar with the...
Lesson Plan
Curated OER

A World of Symmetry

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

Galaxies

For Teachers 10th
Tenth graders explore the structure and content of galaxies. Through discussion, lab, and hands-on activities, they discover the general structure of the three types of galaxies as well as the effect they have on the structure and...
Lesson Plan
EngageNY

Graphs of Simple Nonlinear Functions

For Teachers 8th Standards
Time to move on to nonlinear functions. Scholars create input/output tables and use these to graph simple nonlinear functions. They calculate rates of change to distinguish between linear and nonlinear functions.
Assessment
Illustrative Mathematics

Lines of Symmetry for Circles

For Students 4th Standards
Further your instruction on geometrical symmetry with an investigation of circles. Fourth graders come to realize that the lines of symmetry of a circle are infinite.
Activity
Noyce Foundation

Tri-Triangles

For Students K - 12th Standards
Develop an understanding of algebraic sequences through an exploration of patterns. Five leveled problems target grade levels from elementary through high school. Each problem asks young mathematicians to recognize a geometric pattern....
Lesson Plan
Curated OER

Lines, Rays, Line Segments, and Planes

For Teachers 9th - 12th
Learners are introduced to lines, rays, line segments and planes and study the differences between them. They also practice graphing lines, rays, line segments and planes
Lesson Plan
Curated OER

Geography: Lengths, Perimeter, and Area of Similar Objects

For Teachers 6th
Sixth graders explore characteristics of similar objects. Using attribute blocks, they explore the ratios of the perimeter, area and side length in similar shapes. They calculate and compare the area of shapes.