Interactive
Annenberg Foundation

Geometry 3D Shapes: Platonic Solids

For Students 6th - 10th Standards
From polyhedrons to platonic solids, here is a lesson that will have your classes talking! As an introduction to platonic solids, scholars cut and fold nets to create the three-dimensional solids. They use an interactive component to...
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Curated OER

Classifying Three-Dimensional Shapes

For Teachers 7th
Compare geometric solids based on their properties. Your emergent geometers use spaghetti and marshmallows to build models so they can examine the number of faces, edges, and vertices on polyhedra of their own creation. Resource includes...
Lesson Plan
Curated OER

Volume of Cylinders

For Teachers 7th - 10th
Middle and high schoolers calculate the volume of cylinders. In this geometry lesson, learners differentiate between rectangular prisms and cylinders. They use the correct formula to solve for each solid.
Lesson Plan
Curated OER

Angles

For Teachers 4th - 5th
Fourth and fifth graders investigate angles and name them according to the criteria for obtuse, acute, and right angles. They examine a human-made yarn pattern on the floor of their classroom and identify angles, vertices, and types of...
Lesson Plan
Curated OER

Plane and Solid Figures

For Teachers 9th - 11th
Students define a plane and a solid shape. In this geometry lesson, students compare and contrast different geometric shapes as they relate to solids. They name the geometric solids based on their sides and edges.
Activity
Illustrative Mathematics

Box of Clay

For Teachers 5th - 7th Standards
What happens to a volume when you scale the dimensions of a rectangular prism? In this problem, a box of clay is increased in each dimension, with the intent to see if learners can generalize the result. The addition of...
Lesson Plan
Curated OER

The Value of Volume

For Teachers 9th - 11th
Students measure the perimeter and area of their polygons. In this geometry lesson, students calculate the volume and area using the correct tools. They calculate the time and temperature and the perimeter and side lengths of triangles.
Lesson Plan
Curated OER

Advanced Algebra with the TI-89

For Teachers 9th - 12th Standards
Pupils investigate the formulas for volumes of various solids using the Ti-89 calculator. The lesson focuses on the keying sequences necessary to embed the required volume formula in a program which is then used in the problem solving...
Lesson Plan
Curated OER

Solid Figures

For Teachers 9th - 11th
Pupils investigate solids. In this geometry lesson, students use toothpicks and gum drops to solve problems. They create visuals to help them see what is happening to the shapes.
Lesson Plan
Curated OER

Surface Area of Prisms

For Teachers 9th - 11th
Students calculate the surface area of different prisms. In this geometry instructional activity, students identify the shapes of solids based on the properties of that solid. They calculate the surface area using nets and...
Lesson Plan
Curated OER

More Prisms/Nets

For Teachers 9th - 11th
Students calculate the volume and surface are of three-dimensional shapes. In this geometry lesson plan, students use the nets to prove their calculations of shapes. They identify the different parts of a solid using the nets.
Lesson Plan
Curated OER

Matter

For Teachers 4th - 6th
Learners complete a unit of activities to learn about states of matter and how to measure matter. In this matter instructional activity, students complete 8 lessons to learn about matter, its states, and how to measure matter.
Lesson Plan
Curated OER

Faces, Vertices, Edges

For Teachers 9th - 10th
Students identify the parts of three dimensional objects. In this geometry instructional activity, students find the number of faces, edges and vertices. They differentiate between prisms and polyhedra.
Lesson Plan
Curated OER

Congruence with Robot Gobot

For Teachers 8th - 10th
Students identify the properties of solids and polygons. In this geometry lesson, students identify the different measurements of a triangle. They use congruence parts and theorem to prove their answer.
Lesson Plan
Curated OER

Euler Characteristic

For Teachers 9th - 11th
Students identify the different properties of Euler's Characteristics. In this geometry lesson, students identify the shape and surface a polygon. They relate the concept of Euler to solving real world problems.
Lesson Plan
Curated OER

Sketching Cylinders

For Teachers 9th - 11th
Students create nets of cylinders. In this geometry lesson, students calculate the surface area of cylinders and other solids. They show their understanding of three-dimensional shapes by solving problems.
Lesson Plan
Curated OER

Geometry and Shapes

For Teachers 9th - 12th
High schoolers discuss and identify polygons and lines. In this geometry lesson, learners review liner, square and cubic units so they can incorporate it into the lesson on measurement and creating packing that are cost effective.
Lesson Plan
Curated OER

Symmetry with Manipulatives

For Teachers 1st
First graders investigate symmetry in patterns by utilizing unifix cubes.  In this pattern lesson, 1st graders practice creating patterns that are perfectly symmetrical no matter which way it's looked at.  Students utilize...
Lesson Plan
Curated OER

Why Doesn't SSA Work?

For Teachers 10th - 11th
Students investigate the relationship between angles and their sides. For this geometry lesson, students prove why SSA does not work as a true angle side relationship theorem.