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Khan Academy

Khan Academy: Determine Rotations

For Students 9th - 10th Standards
Given a figure on the coordinate plane and a center of a rotation, find the angle for the rotation that maps one figure to the other. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...
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Khan Academy

Khan Academy: Rotate Shapes: Center Not (0,0)

For Students 9th - 10th Standards
Given a figure on the coordinate plane and the definition of a rotation about an arbitrary point, draw the image of that rotation. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video,...
Activity
Other

Calculating the Surface Area of a Cone

For Students 9th - 10th
This site explains a method for finding the surface area of a cone. It has several plane geometry formulas.
Handout
Wikimedia

Wikipedia: Plane of Symmetry

For Students 9th - 10th
This site from the free encyclopedia, Wikipedia, provides a basic definition for plane of symmetry. Links are given for additional information on related subjects.
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That Quiz

That Quiz: Practice Test: Graph Points

For Students 5th - 7th Standards
This resource allows users to test their knowledge about graph points.
Activity
Math Medics

S.o.s. Math: Algebra

For Students 9th - 10th Standards
This lesson provides basic instruction on the major concepts in algebra. Content includes a focus on fractions, units of conversion, complex numbers, quadratic equations, factorization and roots of polynomials, solving equations, systems...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Co Fixed Points of Rigid Motions

For Teachers 9th - 10th Standards
A rigid motion of the plane is a map of the plane to itself which preserves distances between points. The purpose of this task is to use fixed points as a tool for studying and classifying rigid motions of the plane, i.e., translations,...
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.
Unit Plan
CK-12 Foundation

Ck 12: Distance Formula

For Students 9th - 10th Standards
[Free Registration/Login Required] Students explore the concept of the distance formula by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more about...
Website
Other

Central Michigan University: Point Slope Form

For Students 9th - 10th Standards
This resource features information on the point-slope form in geometry. It provides a good definition, several examples, and information on various forms.
Website
PBS

Pbs Learning Media: Two Points Determine a Line

For Students 6th - 8th Standards
In this video segment [2:10] from Cyberchase, Digit must make a straight line between the two points and then follow the path created.
Website
PBS

Pbs Learning Media: Two Sightings, Different Information

For Students 5th - 7th
Jackie and Matt are looking at the same object along two different lines, in this video segment from Cyberchase.
Unit Plan
Sophia Learning

Sophia: Planar Objects Have Only Two Dimensions

For Students 9th - 10th
Explore why objects drawn on a plane are two dimensional in this video tutorial. [4:57] Take a quiz to assess learning.
Handout
Math Open Reference

Math Open Reference: Points and Lines

For Students 9th - 10th Standards
A complete reference guide to points, lines, and planes. It provides definitions and interactive activities that enhance further explanation.
Website
PBS

Pbs Learning Media: Directions to Hen Rock

For Students 3rd - 9th Standards
The CyberSquad has to deal with angles and distances to locate a treasure chest in this video segment from Cyberchase.
Unit Plan
CK-12 Foundation

Ck 12: Parallel Lines

For Students 9th - 10th Standards
[Free Registration/Login Required] Students explore the concept of parallel lines by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more about the...
Lesson Plan
Better Lesson

Better Lesson: Polygons in the Grid

For Teachers 6th Standards
Connecting the dots between Geometry and the Coordinate Grid.
Lesson Plan
University of South Florida

Fcat: Reflection: Teacher Notes

For Teachers 9th - 10th Standards
Students use the coordinate plane to investigate how reflections affect geometric shapes. Can be used by the student, but is also a great lesson plan idea for teachers.
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Khan Academy

Khan Academy: Congruence and Transformations

For Students 9th - 10th Standards
Given a pair of figures in the coordinate plane, try to map one onto the other and determine whether they are congruent. Includes examples of glide reflections. Students receive immediate feedback and have the opportunity to try...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Co Seven Circles Ii

For Teachers 9th - 10th Standards
In this task, seven pennies are placed in a circle so that they are all touching one in the center and their neighbors. Students are asked to find as many rigid motions of the plane as they can which are symmetries of this configuration...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Co Reflections and Equilateral Triangles

For Teachers 9th - 10th
Given an equilateral triangle, students are asked to explore its symmetries using rigid transformations of the plane. Aligns with G-CO.B.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: A Ced.2 and G Gmd.4: Global Positioning System I

For Teachers 9th - 10th
This question examines the algebraic equations for three different spheres. The intersections of each pair of spheres are then studied, both using the equations and thinking about the geometry of the spheres. Aligns with A-CED.A.2 and...
Lesson Plan
Better Lesson

Better Lesson: Building With Shapes

For Teachers 1st Standards
I love blending art and math. I want my students to develop a depth of knowledge for 2D plane shapes and distinguish polygon from non-polygon shapes.
Whiteboard
ClassFlow

Class Flow: Geometry 2 D Shapes

For Teachers 6th - 8th Standards
[Free Registration/Login Required] This flipchart introduces basic geometric shapes and gives students practice finding geometric shapes in everyday objects.

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