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# Polyhedrons

## 3-D figures formed by polygons enclosing regions in space.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Polyhedrons

This concept teaches students about polyhedrons, Euler's Theorem, and regular polyhedrons.

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• Video

## Polyhedrons Principles

This video gives more detail about the mathematical principles presented in Polyhedrons.

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• Video

## Polyhedrons Examples

This video shows how to work step-by-step through one or more of the examples in Polyhedrons.

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• Practice
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## Polyhedrons Practice

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• Critical Thinking

## Polyhedrons Discussion Questions

A list of student-submitted discussion questions for Polyhedrons.

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To encourage students’ critical thinking about vocabulary concepts, to allow students to reflect on their knowledge of individual vocabulary words, and to increase vocabulary comprehension using the Vocabulary Self-Rate.

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To encourage students’ critical thinking about vocabulary concepts, to allow students to reflect on their knowledge of individual vocabulary words, and to increase vocabulary comprehension using the Vocabulary Self-Rate.

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## Polyhedrons Double Entry Diary

Connect your daily life experiences with specific points in a reading using a Double Entry Diary.

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• Real World Application

## Roly Poly Polyhedron!

Learn about Stella, a computer program that allows you to create 3D models of polyhedrons, taking them from the screen to real life.

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• Study Guide

## Polyhedra Study Guide

This study guide reviews how to classify polyhedra, Euler's formula, and regular polyhedra.

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