+
Unit Plan
Khan Academy

Khan Academy: Nets of Polyhedra

For Students 5th - 7th Standards
Practice matching 2D nets to the 3D shapes the fold up into. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
+
Activity
National Council of Teachers of Mathematics

Nctm: Figure This: Cut the Cake

For Students 2nd - 6th Standards
A math challenge where geometry, measurement, and problem solving meet. Explore the properties of three dimensional shapes when you discover how six friends can equally divide a nine inch square chocolate cake. A one page activity from...
+
Unknown Type
CPALMS

Cpalms: Size It Up

For Teachers 9th - 10th Standards
[Free Registration/Login Required] This is a formative assessment task where students are asked to use geometric solids to model each of four tent shapes on a worksheet and use mathematical language to describe them. Samples of student...
+
Website
Other

Teach Net: Brain Binders

For Teachers 3rd - 5th
Brain binders are great teacher sources for problem solving and critical thinking with geometry. Students fold sheets of paper to create solid colors on each side. Various levels are included starting with two folds through five folds.
+
Lesson Plan
Alabama Learning Exchange

Alex: Thinking Outside the "Box"

For Teachers 6th - 8th
The students will find the area of each two dimensional figure on a net of a rectangular prism. In groups, students will cut out the net and create a rectangular prism. Groups will then discuss how to find the lateral area and the total...
+
Activity
University of Cambridge

University of Cambridge: Nrich: Wag Worms

For Students K - 1st Standards
Use this challenge to see how many unique shapes can be created using exactly 5 cubes. At this one page website you can also check your results.
+
Unit Plan
Math2

Math2.org: Areas, Volumes, Surface Areas

For Students 9th - 10th
This site gives formulas for the area, volume, and surface area of various shapes.
+
Activity
University of Cambridge

University of Cambridge: Nrich: All in the Mind

For Students 3rd - 8th
You will have to use visualization to help you solve this challenge. At this one page website, you will be able to check your solution.
+
Activity
University of Cambridge

University of Cambridge: Nrich: Dicey

For Students 3rd - 8th
If you can visualize a cube and turn it around in your mind, then this is the challenge for you. This one page website has the solution available to check your thinking.
+
Activity
University of Cambridge

University of Cambridge: Nrich: Instant Insanity

For Students 3rd - 8th Standards
Excellent interactive challenge working with cube nets to stack them in a specific order. Manipulate the cubes online to solve the problem.
+
Activity
University of Cambridge

University of Cambridge: Nrich: Up and Down Stairs

For Students 3rd - 4th Standards
Work with this cube problem and see if you can find a pattern. Then you can check your solution with solutions already submitted.
+
Activity
University of Cambridge

University of Cambridge: Nrich: Triangles to Tetrahedra

For Students 3rd - 8th Standards
Given an unlimited number of a specific type of equilateral, isosceles, and right triangles create as many tetrahedra as are possible. Includes printout.
+
Unknown Type
Khan Academy

Khan Academy: Cross Sections of 3 D Objects

For Students 9th - 10th Standards
Practice your knowledge of all possible cross-sections of common 3D objects. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
+
Unknown Type
McGraw Hill

Glencoe Mathematics: Online Study Tools: Three Dimensional Figures

For Students 7th - 9th Standards
This site gives a short interactive quiz which allows students to self-assess their understanding of the concept of three-dimensional figures.
+
Unknown Type
McGraw Hill

Glencoe Mathematics: Online Study Tools: Surface Area of Prisms and Cylinders

For Students 7th - 9th Standards
This site gives a short interactive quiz which allows students to self-assess their understanding of the concept of finding the surface area of prisms and cylinders.
+
Unknown Type
McGraw Hill

Glencoe Mathematics: Online Study Tools: Surface Area of Pyramids and Cones

For Students 7th - 9th Standards
This site gives a short interactive quiz which allows students to self-assess their understanding of the concept of finding the surface area of pyramids and cones.
+
Interactive
PBS

Pbs Learning Media: Comparing Volumes of Cylinders, Spheres, and Cones

For Students 6th - 8th Standards
This interactive exercise focuses on comparing volumes between figures that have the same height and diameter and drawing conclusions based on the ratios of the sizes.
+
Activity
University of Cambridge

University of Cambridge: Nrich: Christmas Presents

For Students 3rd - 8th Standards
Improve your logic and net recognition skills with this learning game. Solution included.
+
Activity
University of Cambridge

University of Cambridge: Nrich: Making Boxes

For Students 3rd - 8th Standards
Have fun and learn by making a box and then find out its maximum volume as well as other problem-solving activities, including making a table of your results and drawing a graph.
+
Activity
University of Cambridge

University of Cambridge: Nrich: Making Cuboids

For Students 3rd - 8th Standards
How many different cuboids can you make? Learn how and learn how to represent data with your results.
+
Unit Plan
Shmoop University

Shmoop: Basic Geometry: 3 D Objects (Prisms, Cylinders, Cones, Spheres)

For Students 9th - 10th Standards
The geometry resource investigates three-dimensional objects. Objects include prisms, cylinders, cones, and spheres. Detailed examples and practice exercises are included.
+
Activity
University of Cambridge

University of Cambridge: Nrich: Octa Space

For Students 3rd - 4th Standards
At this one page web site see if you can solve this puzzle involving the edges of an octahedron. You will definitely need to use your problem solving and spatial reasoning skills for this!
+
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Gmd, G Mg Tennis Balls in a Can

For Teachers 9th - 10th Standards
In this task, students investigate the volume of tennis balls and their cylindrical container, the empty space around the balls, different ways of slicing them, and what their visualizations will look like. Aligns with G-GMD.B.4 and...