Website
Wolfram Research

Wolfram Math World: Geometry

For Students 9th - 10th
This MathWorld tutorial provides detailed overviews of the concepts and theorems associated with geometry. Most of the Math World sites are extensive and some require higher math knowledge to understand, links to terms and topics are...
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Math Drills

Math Drills: Geometry Worksheets

For Students 9th - 10th Standards
Download these worksheets to sharpen your geometry skills. Sheets focus on angles, coordinate geometry, triangles, quadrilaterals, transformations, and three-dimensional geometry, and more.
Unit Plan
Cuemath

Cuemath: Coordinate Geometry

For Students 9th - 10th Standards
A comprehensive guide for learning all about Coordinate geometry with definitions, the coordinate plane, formulas, equation of a line, related topics, solved examples, and practice questions.
Unit Plan
CK-12 Foundation

Ck 12: Molecular Geometry

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] The following online tutorial explains the basis of VSEPR theory. It helps students predict the shapes of molecules and polyatomic ions using VSEPR theory and it...
Study Guide
Oswego City School District

Regents Exam Prep Center: Multiple Choice Practice: Coordinate Geometry

For Students 9th - 10th
Test your knowledge of coordinate geometry by taking this twenty question multiple-choice practice test. Use a graphing calculator to help with any graphing problems and check your answers at any given time throughout the test.
Unit Plan
CK-12 Foundation

Ck 12: Molecular Geometry

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] In this interactive learning module, students will learn a technique to predict molecular geometry based on a molecule's Lewis electron dot structure.
Unit Plan
Cuemath

Cuemath: Euclidean Geometry

For Students 9th - 10th Standards
Explore the world of Euclidean geometry by understanding euclidean and non-euclidean geometry, the postulates and axioms, and how to apply them while solving problems. Check-out the solved examples for better understanding and try your...
Website
Other

Hpedsb: Geometry

For Students Pre-K - 1st Standards
This page of Geometry links addresses many of the Geometry expectations in the Ontario K-8 Math curriculum. There are simple sorting exercises for Grade One and Cartesian Graphing tasks for the intermediate grades.
Unit Plan
CK-12 Foundation

Ck 12: Geometry Software for Constructions

For Students 9th - 10th Standards
[Free Registration/Login Required] Students explore the concept of using geometry software to construct geometric shapes by navigating through the interactive learning module and then answering questions that go along with the module....
Activity
Science Buddies

Science Buddies: M&m Geometry

For Students 3rd - 5th Standards
Geometry is the study of how to use math to describe and investigate different points, lines and shapes. The way that a shape is described in geometry is with a formula, which is simply a mathematical way to calculate different...
Handout
Wolfram Research

Wolfram Math World: Geometry

For Students 9th - 10th Standards
This site provides an understanding of the many types of geometry.
Handout
Oswego City School District

Regents Exam Prep Center: Geometry Vocabulary Resources

For Students 9th - 10th
A list of geometry definitions and a matching activity.
Unit Plan
Oswego City School District

Regents Exam Prep Center: Coordinate Geometry Proofs

For Students 9th - 10th Standards
A lesson, practice activity, and teacher resource for exploring coordinate geometry proofs.
Handout
Math Open Reference

Math Open Reference: Introduction to Coordinate Geometry

For Students 9th - 10th Standards
A complete reference guide to coordinate geometry. It provides definitions and examples that enhance further explanation. Includes links to related topics.
Activity
University of Saskatchewan (Canada)

University of Saskatchewan: Geometry

For Students 9th - 10th Standards
The University of Saskatchewan's Department of Mathematics and Statistics provides high school students with online tutorials and exercises on what they deem some of the most important topics in geometry: Triangles, and Circles and Other...
Activity
Exploratorium

Exploratorium: Geometry Playground

For Students Pre-K - 1st Standards
Colorful explorations of geometry, taken from a museum exhibit. With sections on the geometry of light, the geometry of movement, and the geometry of patterns. Includes photo essays, videos, and activities.
Website
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: High School Archive on Geometry

For Students 9th - 10th Standards
This site is an archive of questions posed by students and the general public about geometry which are responded to by "Dr. Math."
Unit Plan
University of California

Geometry Junkyard

For Students 9th - 10th Standards
An interesting junkyard of geometry findings where people are free to add their own findings and sift through others' interesting additions.
Interactive
Concord Consortium

Concord Consortium: Stem Resources: Molecular Geometry

For Students 9th - 10th
Students work through animated models showing the effects that electron repulsions have on the shape of a molecule in this web-based activity. In addition, shared and unshared electron pairs are demonstrated to define a molecule's shape....
Lesson Plan
Massachusetts Institute of Technology

Mit: Blossoms: Using Geometry to Design Simple Machines

For Teachers 9th - 10th
An MIT engineering professor offers a fun presentation on simple machines, specifically the geometry involved in building them. Students will learn about kinematics ("geometry in motion") and build their own simple machines with a...
Professional Doc
Queen's Printer for Ontario

E workshop.on.ca: Effective Instr in Math, K 3: Geometry & Spatial Sense [Pdf]

For Teachers Pre-K - 1st Standards
This 455-page guide outlines and illustrates effective strategies for teaching geometry and related spatial concepts to children in kindergarten through grade 3.
Handout
University of St. Andrews (UK)

University of St. Andrews: Non Euclidean Geometry

For Students 9th - 10th
The University of St. Andrews in Scotland provides an excellent site explaining Non-Euclidean geometry.
Unit Plan
Texas Education Agency

Texas Gateway: Introduction to Coordinate Geometry

For Students 9th - 10th
The students will use multiple representations of undefined terms on a coordinate plane to solve problems.
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Geometry in the Plane

For Students 9th - 10th
Twenty-four problems presented on a variety of Plane Geometry topics. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button to check...

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