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...
Unit Plan
Math.com

Math.com: Coordinate Geometry

For Students 5th - 8th Standards
The lesson investigates coordinate geometry. Definitions, examples, and a worksheet are available.
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.
Lesson Plan
Alabama Learning Exchange

Alex: Coordinate Geometry

For Teachers 3rd - 5th
Students will participate in several activities that will build their knowledge of coordinates graphing. Students will use ordered pairs to locate points on a grid. Students will also relate coordinate graphing to the real world through...
Activity
National Council of Teachers of Mathematics

Nctm: Figure This: Math Challenges for Families

For Students 2nd - 8th
Students, teachers, and parents alike will enjoy this challenging math site. It contains a clever brain teaser section plus creative problems related to algebra, geometry, measurement, numbers, statistics, and probability. A Spanish...
Unit Plan
Khan Academy

Khan Academy: Identify Coordinates

For Students 4th - 6th Standards
Identify coordinates of points in the first quadrant. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unknown Type
University of Waterloo (Canada)

University of Waterloo: Cemc: Geometry and Spatial Sense: Transformations [Pdf]

For Teachers 6th - 8th Standards
Accompanied by links to online activities and demonstrations, students learn about the different types of transformations on a coordinate grid through this lesson plan. The lesson is designed to match the Grade 7 Ontario curriculum, with...
Website
PBS

Pbs Learning Media: Using a Coordinate Grid

For Students 5th - 7th Standards
In this Cyberchase video segment, the CyberSquad must locate each other using a map's grid to construct a coordinate system using letters and numbers.
Unit Plan
Khan Academy

Khan Academy: Quadrilateral Problems on the Coordinate Plane

For Students 5th - 7th Standards
Challenge problems involving the coordinates of the vertices of the quadrilaterals 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

The Math Forum: Analytic Geometry: Polar Coordinates

For Students 9th - 10th Standards
This site from The Math Forum provides great information on polar coordinates. You can access this information either by clicking on the coordinates link or just scrolling down, it is the first one listed on the page. Includes several...
Unit Plan
Khan Academy

Khan Academy: Area and Perimeter on the Coordinate Plane

For Students 5th - 7th Standards
Find the area and perimeter of quadrilaterals using their coordinates. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unknown Type
Khan Academy

Khan Academy: Coordinate Plane Word Problems (Quadrant 1 Challenging)

For Students 4th - 6th Standards
Try some coordinate plane word problems focusing on quadrant 1. Miss the problem, and Kahn offers some tutorials for help.
Lesson Plan
Other

Nearpod: Mixed Review & Practice: Geometry

For Teachers 5th Standards
In this lesson plan on reviewing fifth-grade geometry concepts, 5th graders learn about the mathematical domain, explain why it is important, and complete a variety of practice problems.
Activity
Texas Instruments

Texas Instruments: Math a Review 1

For Teachers 9th - 10th Standards
This StudyCards stack enables students to review concepts in algebra, arithmetic, and geometry, in preparation for the Math A Exam held in New York. They solve problems involving scientific notation, factoring, linear equations, rate of...
Lesson Plan
University of Regina (Canada)

University of Regina: Math Central: Plane Geometry

For Teachers 3rd - 5th Standards
Lesson plans on how to incorporate plane geometry into an elementary classroom. Activities are hands-on, use manipulatives, and incorporate real world experiences.
Lesson Plan
University of Regina (Canada)

University of Regina: Math Central: Introduction to Slope for Middle Years Mathematics

For Teachers 6th - 8th
This collection of five middle school math lessons covers the topic of plane geometry, specifically the concept of slope. The first lesson introduces middle schoolers to plotting points on a Cartesian grid using a Geoboard. Lesson two...
Website
Other

Center School District: Everyday Math Resources

For Students 3rd - 8th
Everyday Math Resources for 5th grade is an excellent resource for both students and teachers. Twelve math strands are linked to activities and interactive games that support the learning outcomes. Click on links at the top to access...
Activity
Maths Challenge

Maths challenge.net: Triangle Area

For Students 9th - 10th Standards
Find the area of this triangle in a coordinate plane.
Unknown Type
Khan Academy

Khan Academy: Practice: Coordinate Plane Word Problems Practice (Quadrant 1)

For Students 4th - 5th Standards
Practice some more challenging quadrant one coordinate plane word problems.
Professional Doc
National Council of Teachers of Mathematics

The Math Forum: Using Geoboards in the Classroom

For Teachers 2nd - 6th
A thorough look at the extensive uses of geoboards in the classroom. Links are listed which give introductory information on geoboards - for teachers new to using them. Then, lesson plans are provided for using geoboards in teaching...
Unknown Type
Khan Academy

Khan Academy: Practice: Coordinate Plane Word Problems (Quadrant 1)

For Students 5th - 6th Standards
In this exercise, questions provide practice with coordinate plane word problems. Immediate feedback is given and hints or a video are available if needed.
Unknown Type
Khan Academy

Khan Academy: Drawing Polygons With Coordinates

For Students 6th - 8th Standards
In this exercise, students practice drawing polygons with coordinates. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Unknown Type
Khan Academy

Khan Academy: Area and Perimeter on the Coordinate Plane

For Students 9th - 10th Standards
Find the area or perimeter of shapes like triangles, rectangles, parallelograms, and hexagons on the coordinate plane. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
Khan Academy

Khan Academy: Reflecting Points in the Coordinate Plane

For Students 5th - 7th
Practice reflecting points across axes on the xy coordinate plane. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.