Lesson Plan
PBS

Pbs Kids Afterschool Adventure!: Operation: Shape Hunt Activity Plan

For Teachers Pre-K - K Standards
Calling all Shape Detectives! In this weeklong adventure, the children will explore and search for basic shapes as they go on a shape hunt. They will describe, match, sort and compose a variety of two-dimensional shapes, and create a...
Lesson Plan
Better Lesson

Better Lesson: Shape Monsters!

For Teachers K Standards
Kindergartners love making things, and this activity allows them to create a unique shape monster and practice numbers recording the shapes used.
Lesson Plan
University of Texas

Inside Mathematics: Which Shape [Pdf]

For Teachers 2nd - 4th Standards
This task challenges a student to use knowledge of geometrical attributes to identify and describe shapes.
Lesson Plan
Scholastic

Scholastic: Setting the Stage With Geometry

For Teachers 6th - 8th Standards
Students will learn and reinforce skills for measuring perimeter and area of 2D shapes and measuring surface area and volume of 3D shapes.
Lesson Plan
PBS

Pbs Kids Afterschool Adventure!: Operation: Shape It Up Activity Plan

For Teachers 1st - 3rd Standards
Get your spy glasses ready! In this weeklong adventure, children will explore shapes and their attributes and use this knowledge to decode a secret message. Children will learn about two-dimensional (flat) and three-dimensional (solid)...
eBook
Mathigon

Mathigon: Geometry: Triangles and Trigonometry: Properties of Triangles

For Students 9th - 10th Standards
This lesson focuses on the properties of triangles, a closed shape that has three sides, three vertices, and and three internal angles. There are different types of triangles such as a right triangle, obtuse, and acute based on the...
eBook
Mathigon

Mathigon: Geometry: Polygons and Polyhedra: Polygons

For Students 9th - 10th Standards
This lesson focuses on polygons; a polygon is a closed, flat shape that has only straight sides. Polygons can have any number of sides and angles, but the sides cannot be curved.
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 5.5 Geometry Software for Constructions

For Students 9th - 10th Standards
Use interactive geometry software to construct an equilateral triangle that maintains its shape even if you move its vertices.
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 2.5 Geometry Software for Reflections

For Students 9th - 10th Standards
See how geometry software expresses geometric shape reflections.
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 2.1 Transformations in the Plane

For Students 9th - 10th Standards
Explore the process that changes the shape, size or position of a figure to create a new image, transformations.
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 1.11 Surface Area and Nets

For Students 9th - 10th Standards
Explore surface areas and nets with 2D and 3D shapes.
Lesson Plan
Better Lesson

Better Lesson: Making New Shapes With Shapes

For Teachers 1st Standards
My first graders have been studying the defining attributes of 2D shapes. They are going to love using toothpicks and marshmallows to present their knowledge of 2D and create 3D shapes.
Unit Plan
PBS

Pbs: Geometry and Classification of 2 D Figures: Bianca Busts a Move

For Students 3rd - 5th
In this video from Cyberchase, Bianca breaks her friend's tabletop when she's practicing dance moves in his living room. She uses measurement and geometry to get a new piece of wood that will fit the table exactly. The accompanying...
Lesson Plan
Better Lesson

Better Lesson: Assessing Composing and Decomposing Shapes

For Teachers 1st Standards
Knowledge in Action! Today you will find out if the students are understanding the idea of decomposing and composing shapes with pattern blocks.
Lesson Plan
Better Lesson

Better Lesson: Differences With Shapes

For Teachers 3rd Standards
Differences between shapes are determined through measurement skills.
eBook
Mathigon

Mathigon: Geometry: Circle and Pi: Conic Sections

For Students 9th - 10th
The circle is one of four different shapes which can be created using "slices" through a cone, a 3-dimensional solid that has a circular base joined to a single point (called the vertex) by a curved side. If you tilt a cone, you get an...
Lesson Plan
University of Texas

Inside Mathematics: Quilt Making [Pdf]

For Teachers 3rd - 5th Standards
This task challenges a student to demonstrate understanding of the concept of two dimensional shapes and their properties.
Lesson Plan
PBS

Pbs: Black Kingdoms of the Nile

For Teachers 9th - 10th
A geometry lesson that examines the history and structure of ancient pyramids and engages students in constructing pyramid models. A comprehensive lesson that considers students with diverse learning styles. Math concepts introduced...
Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Geometric Solids

For Students 9th - 10th Standards
An interactive game to find number of edges, surfaces and vertices of different geometric shapes.
Lesson Plan
Better Lesson

Better Lesson: What Makes a Shape? Analyzing and Script Writing

For Teachers 3rd Standards
Third graders will use the bat houses we built as examples of various quadrilaterals.
Unit Plan
Cuemath

Cuemath: What Is Similarity?

For Students 9th - 10th Standards
This mini-lesson introduces the properties of similarity and its role in geometry.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Mg Ice Cream Cone

For Teachers 9th - 10th Standards
You have been hired by the owner of a local ice cream parlor to assist in his company's new venture. The company will soon sell its ice cream cones in the freezer section of local grocery stores. The manufacturing process requires that...
Lesson Plan
Science Buddies

Science Buddies: Tiling With Spidrons

For Teachers 9th - 10th
If art and math are both passions of yours, this project is meant for you! Spidrons are geometric forms made from alternating sequences of equilateral and isosceles (30 degrees, 30 degrees, 120 degrees) triangles. Spidrons were...
Website
Purple Math

Purplemath: Geometric Formula Review

For Students 10th - 12th Standards
Need to freshen up on your geometric formulas? This explanation focuses on some basic formulas that should be committed to memory such as area, volume, perimeter, and more.

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