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.
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...
Government of Alberta
Learn Alberta: Math Interactives: Exploring Surface Area, Volume, and Nets
Investigate the concepts of area, volume, 3D shapes, and nets using this interactive Learn Alberta math. The solid shapes focused on this exploration include rectangular and triangular prisms, rectangular and triangular pyramids,...
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...
Texas Instruments
Texas Instruments: Give Me a Hand or Leaf Me Alone
In this activity, students' find the surface area of geometric shapes cut from card paper and relate it to its mass. They use this data to find the surface area of irregularly shaped objects.
Doina Popovici
Math Play: Geometric Figures Game
An online game where students use their skill to classify geometrical figures.
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...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Rhombus
This is a very brief look at the rhombus, which is a quadrilateral shape with four equal sides. Features include a JavaSketchpad that allows you to manipulate the shape.
NC State University
The Engineering Place: Shapes
A lesson plan in creating 3-D solids using toothpicks and marshmallows.
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.
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...
CPALMS
Cpalms: Size It Up
[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 instructional activity and use mathematical language to describe them. Samples...
Varsity Tutors
Varsity Tutors: Aplus Math: Geometry Hidden Picture (Non Java)
Uncover the hidden picture by correctly matching geometry terms to their corresponding diagrams. This fun interactive online game will have your students asking to practice their math!
University of Cambridge
University of Cambridge: Nrich: Three Cubed
Use the shapes provided and figure out how they fit together to make a 3 X 3 cube at this one page website. The solution is readily available right at the website.
History is Fun
Jan Brett: Geometric Solids Flashcards Pdf
Print out these colorfully illustrated PDF file pages to practice learning your basic three dimensional geometric solids. Fold them in half and one side shows the shape while the other side shows the shape with the correct name. Put them...
University of Cambridge
University of Cambridge: Nrich: A Puzzling Cube
See if you can figure out which symbols are on which cube face at this one page website. The solution is just a click away once you have your solution in mind.
National Council of Teachers of Mathematics
Nctm: Figure This: Visualizing
Is seeing believing? Explore visualizing and spatial reasoning with three dimensional shapes in this challenge from the NCTM Math Challenge for Families collection. Discover why visualization is essential skill in real world situations.
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...
George Mason University
Area Formula Lab
In this set of worksheet activities, students will be guided to discover formulas for area of polygonal shapes and circles.
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.
OER Commons
Oer Commons: Review Quiz
Students reflect on their work and apply what they've learned about the characteristics of geometric figures. Includes a learning game to be played with a partner.
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.
Quia
Quia: Geometric Terms Word Search
Do you need practice remembering or learning different geometry vocabulary words and definitions? This word search is the web site for you! There is a link to a list of terms with definitions you can click if you want to see if you are...