Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 8.g Triangle Congruence With Coordinates

For Teachers 8th Standards
In this task, 8th graders explore congruence and transformations of two triangles on a coordinate grid. Aligns with 8.G.A.2.
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...
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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, middle schoolers 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...
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Khan Academy

Khan Academy: Rotate Shapes

For Students 9th - 10th Standards
Given a figure on the coordinate plane and the definition of a rotation about the origin, draw the image of that rotation. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or...
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Khan Academy

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

For Students 6th - 8th
Given a figure on the coordinate plane and the definition of a rotation about an arbitrary point, manually draw the image of that rotation.
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Khan Academy

Khan Academy: Rotate Shapes

For Students 6th - 8th Standards
Given a figure on the coordinate plane and the definition of a rotation about the origin, manually draw the image of that rotation.
Unknown Type
Khan Academy

Khan Academy: Determine Rotations

For Students 9th - 10th
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.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 8.g Congruent Triangles

For Teachers 8th Standards
In this task, 8th graders investigate congruence and transformations of two triangles on a coordinate grid. Includes a GeoGebra worksheet that the teacher can use for demonstration purposes. Aligns with 8.G.A.2.
Unit Plan
Texas Education Agency

Texas Gateway: Making Conjectures About Congruence Transformations

For Students 9th - 10th Standards
Given geometric figures on the coordinate plane, the student will apply the definition of congruence, in terms of rigid transformations, to identify congruent figures. The student will also identify and distinguish between reflectional...
Lesson Plan
Alabama Learning Exchange

Alex: Determine the Vertices of Transformed Images

For Teachers 9th - 10th
This hands-on lesson uses exploration and discovery to help students determine the coordinates of the vertices of various figures when translated, rotated, or reflected in a coordinate plane. The exploration phase will access students'...
Unit Plan
University of Illinois

University of Illinois Urbana Champaign: Chickscope Eggmath: The Shape of an Egg

For Students 6th - 8th
An interactive page offering a view of a rotating egg, information on rotational symmetry, and definitions of related topics.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: F Tf, G Co, Trigonometric Identities and Rigid Motions

For Teachers 9th - 10th Standards
The purpose of this task is to apply translations and reflections to the graphs of the functions f(x)=cos x and g(x)=sin x in order to derive some trigonometric identities. There are also rotations 180 degrees about points on the x-axis...