Grade 8 ยท Mathematics Video Lesson
Generalize that the ratio of corresponding sides of similar shapes are proportional, including a shape and its dilation Video Lesson
Curriculum-aligned Grade 8 Mathematics lesson video for Generalize that the ratio of corresponding sides of similar shapes are proportional, including a shape and its dilation. Use it for classroom preview, instruction support, or home review.
About This Video
Curriculum-aligned Grade 8 Mathematics lesson video for Generalize that the ratio of corresponding sides of similar shapes are proportional, including a shape and its dilation. Use it for classroom preview, instruction support, or home review.
This watch page is dedicated to the video. For the complete text lesson plan, activities, standards alignment, and answer guides, use the companion lesson page: Generalize that the ratio of corresponding sides of similar shapes are proportional, including a shape and its dilation lesson plan.
Video Learning Notes
In this lesson, students learned that similar shapes have corresponding sides whose lengths are proportional. Dilations produce similar shapes by scaling side lengths by a positive scale factor, changing size but preserving shape and angles. On the coordinate plane, dilations multiply each vertex coordinate by the scale factor when the origin is the center. Understanding these concepts allows students to solve problems involving missing side lengths and coordinate transformations related to similarity and dilation.
Learning Goals
- Explain and generalize that the ratio of corresponding sides of similar shapes are proportional, including shapes and their dilations.
- Compare and contrast the attributes of a shape and its dilation(s) on a coordinate plane.
- Use proportional reasoning to solve problems involving similar shapes and their dilations.
Curriculum Context
Grade: Grade 8
Subject: Mathematics
Curriculum: TEKS