National Council of Teachers of Mathematics
Nctm: Figure This: Envelopes
Explore tessellations with real world applications in this activity from the NCTM Math Challenges for Families series. Figure out what shape you would use to create a legal envelope from a single sheet of paper. Then discover how...
Math Slice
Math Slice: Solid Slice Special Test
A ten-question test for assessing geometry concepts with solid figures. This assessment is scored online providing students with immediate feedback. Great for use as an assessment tool.
Texas Instruments
Texas Instruments: Copying an Angle
Explore relationships (including congruence and similarity) among classes of two- and three-dimensional geometric objects, make and test conjectures about them, and solve problems involving them.
Annenberg Foundation
Annenberg Learner: Shadows
Can you judge an object by its shadow? Use your mental rotation skills to determine if a shadow can be produced by a particular shape.
The Math League
The Math League: Surface Area
This tutorial explains the concept of surface area, and then goes through multiple shapes offering the specific surface area formula for each one.
National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: Giros en El Reloj
Discover the different types of figures you can make by moving n numbers of minutes around a clock.
![Pbs: Mathline: Let's Face It [Pdf] Lesson Plan](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Pbs: Mathline: Let's Face It [Pdf] Lesson Plan")
PBS
Pbs: Mathline: Let's Face It [Pdf]
Check out this math project about polyhedra! Students will enjoy the hands-on activity while they learn about tetrahedrons, hexahedrons, octahedrons, dodecahedrons, and icosahedrons. [Requires Adobe Reader.]
PBS
Pbs: Black Kingdoms of the Nile
A geometry lesson plan that examines the history and structure of ancient pyramids and engages young scholars in constructing pyramid models. A comprehensive lesson plan that considers students with diverse learning styles. Math concepts...
National Council of Teachers of Mathematics
Nctm: Illuminations: Volume of a Cube
"The volume of a cube can be developed by considering unit cubes, a single row (longs) of unit cubes or a single layer (flats) of cubes using this applet." This easy software makes it possible to easily construct a cube and take it...
National Council of Teachers of Mathematics
Nctm: Figure This: Table for 19 (Pdf)
The waiters at Polygon's Restaurant need your help. See if you can use your problem solving and patterning skills to help them solve this math challenge. Discover how developing these skills could be useful in real life situations, in...
Curated OER
Educational Technology Clearinghouse: Clip Art Etc: Geometric Woman
Figure of a woman made from geometric shapes.
Purple Math
Purplemath: Geometry Word Problems: Introduction
Introduces how to set up and solve simple geometric-figure word problems. Includes advice regarding formulas to memorize.
National Council of Teachers of Mathematics
The Math Forum: The Cylinder Problem: High School Lesson
Using an engaging approach, this instructional activity requires students to record the volume of cylinders as a function of the radius. Students will construct and measure the volume of several cylinders and then begin comparing these...
Instituto Latinoamericano de la Comunicacion Educativa
Red Escolar: Recortando Geometria
In Spanish. In this site you will find different activities involving geometric plane figures.
CK-12 Foundation
Ck 12: Geometry: Types of Transformations Study Guide
[Free Registration/Login may be required to access all resource tools.] Transformations move and modify geometric shapes. There are several types of transformations that all transform figures in different ways. These transformations can...
ClassFlow
Class Flow: Summing Differences
[Free Registration/Login Required] In this flipchart, students apply their understanding of geometric properties and relationships. Students use geometric properties and relationships to describe, compare, and draw two-dimensional shapes...
ClassFlow
Class Flow: Solids
[Free Registration/Login Required] In this flip chart, students apply geometric sense by using the properties of two-dimensional and three-dimensional shapes to solve mathematical problems involving area and volume.
ClassFlow
Class Flow: Pentominoes
[Free Registration/Login Required] Students use geometric sense to create congruent shapes and figures in multiple orientations using transformations.
University of Cambridge
University of Cambridge: Nrich: Where Are They?
Test your logic, polygon properties, and pattern recognition skills working on this challenge. Solution included.
University of Cambridge
University of Cambridge: Nrich: Happy Halving
On this one page website expand your logic, symmetry and pattern recognition knowledge while working on this challenge. The solution is available to double check your solution.
Math Is Fun
Math Is Fun: Making 3 D Solids
This tutorial features templates and instructions to make the following solids: tetrahedron, cube, octahedron, dodecahedron, and icosahedron.
Other
Nazca Figures: Inca Lines. Inca
Text and photographs focus on various figures and geometric shapes: Nazca Candleabra, Nazca Whale, Nazca Rose, and Nazca Hummingbird. Includes a chart of all Nazca designs.
University of Cambridge
University of Cambridge: Nrich: Instant Insanity
Excellent interactive challenge working with cube nets to stack them in a specific order. Manipulate the cubes online to solve the problem.
abcteach
Abcteach: Geometry
[Free Registration/Login Required] This resource has an assortment of teacher-created geometry activities for elementary and primary students. Printable two-dimensional shapes, area and perimeter worksheets, board games, rules and...