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Instructional Video4:32
Curated Video

Identifying Geometric Figures in Two-Dimensional Shapes

K - 5th
In this lesson, students will learn how to identify and classify geometric figures in two-dimensional shapes. They will understand the properties of points, lines, rays, and angles and use them to analyze shapes. By recognizing parallel...
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Instructional Video5:59
Curated Video

How to Identify Vertices, Edges & Faces in Three Dimensional Figures

9th - 12th
In this video lesson we will learn how to identify vertices, edges and faces on a three-dimensional solid. We will learn that the edges meet at the vertices. We will discover that each face is formed by edges. We will discover the...
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Instructional Video1:46
Brightstorm

3-D Solid Properties

9th - 12th Standards
Let's move into the third dimension! Learners explore the vocabulary and notation related to three-dimensional figures. The video covers examples of pyramids, but the vocabulary is universal to all 3-D objects.
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Instructional Video4:01
CK-12 Foundation

Similar Solids: Lesson

6th - 11th
Blow up a solid by a scale factor. A section of a larger playlist on basic geometry introduces the ratios of the surface areas and volumes of similar solids. Using the ratios, the video works several examples involving similar figures.
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Instructional Video7:07
CK-12 Foundation

Composite Solids: Lesson

8th - 11th Standards
Combine the formulas to arrive at one volume. Using the formulas for different solids, the video introduces finding the volume of composite solids. The portion of an extensive playlist on geometry works a couple of problems, one with an...
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Instructional Video3:59
CK-12 Foundation

Three Dimensions in Two Dimensions: Lesson

6th - 11th Standards
Slice up solids. A portion of a geometry playlist introduces two conventional ways to visualize 3-D figures in 2-D. The resource defines cross-sections and nets and provides examples of both.
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Instructional Video7:43
Curated OER

What is the Formula for the Volume of a Prism?

6th - 10th
Is prism just another mathematical term for a solid? It must be since this lesson is about volume. The teacher illustrates and explains how to find the volume of a rectangular prism and also how to find the volume of a triangular prism....