LEARN NC

K–12 teaching and learning · from the UNC School of Education

Mathematics — Grade 8

Goal 3: Geometry - The learner will understand and use properties and relationships in geometry.

Objective 3.03. Identify, predict, and describe dilations in the coordinate plane.

Additional related resources

We’re in the process of aligning our content for students to the Standard Course of Study. As we do, you’ll find it here.

General resources

Aligned lesson plans

Translations, reflections, rotations
This lesson will allow students to explore translations, reflections, and rotations using a resource of Shodor Education Foundation, Inc. Permission has been granted for the use of the materials as part of the workshop Interactivate Your Math Students. Students explore the world of translations, reflections, and rotations in the Cartesian coordinate system by transforming squares, triangles and parallelograms. Parameters: Shape, x or y translation, x or y reflection, angle of rotation. (Italics are a direct quote from Shodor.org.)
Format: lesson plan (grade 6–8 Mathematics)
By Deborah Bourne.
Commercial and industrial designers: Working with volume
In CareerStart lessons: Grade eight, page 3.7
In this lesson, students calculate the volume of a variety of boxes, and calculate the change in volume that would result from a change in the boxes' dimensions.
Format: lesson plan (grade 7–8 Mathematics)
By Valerie Davis, Sonya Rexrode, and Monika Vasili.

Resources on the web

Understanding congruence, similarity, and symmetry using transformations and interactive figures: Visualizing transformations
The interactive figures in this four-part example allow a user to manipulate a shape and observe its behavior under a particular transformation or composition of transformations. E-Math Investigations are selected e-examples from the electronic... (Learn more)
Format: lesson plan (grade 6–8 Mathematics)
Provided by: National Council of Teachers of Mathematics
Polygon capture: A geometry game
In this lesson, from Illuminations, students classify polygons according to more than one property at a time. They move from a simple description of shapes to an analysis of how properties are related, all in the context of an enjoyable game. (Learn more)
Format: lesson plan (grade 7–8 Mathematics)
Provided by: National Council of Teachers of Mathematics
Exploring the isometric drawing tool
In this lesson, one of a multi-part unit from Illuminations, students explore using an isometric drawing tool and gain practice and experience in manipulating drawings. (Learn more)
Format: lesson plan (grade 6–8 Mathematics)
Provided by: National Council of Teachers of Mathematics
Blue squares and beyond
In this lesson, one of a multi-part unit from Illuminations, students manipulate two rectangles to create examples of similarity and to study the effects on area ratios. (Learn more)
Format: lesson plan (grade 6–8 Mathematics)
Provided by: National Council of Teachers of Mathematics