Cross-Sections and Nets

Cross-sections are intersections of a plane with a solid, and nets are unfolded, flat representations of the sides of a 3-D shape.

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.

Cross-Sections and Nets

This concept teaches students two ways to represent three dimensions in two dimensions: cross-sections and nets.
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Recognize and Draw Nets

Recognize and draw two-dimensional representations of solid figures
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Cross-sections and nets of three-dimensional figures 7.G.3

This concept teaches students two ways to represent three dimensions in two dimensions: cross-sections and nets.
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MCC6.G.4 - Nets

Draw two-dimensional representations of solid figures
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SLTs 4 & 5 Identify the shape of a two-dimensional cross section of a solid.

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Cross-Sections & Nets

Draw two-dimensional representations of solid figures. EngageNY has been used for a portion of this content.
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Nets

Draw two-dimensional representations of solid figures
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Nets of Solid Figures

Discover how to match a solid figure to its net and a net to its solid figure.
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Nets

Draw two-dimensional representations of solid figures
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• PLIX

Cross-Sections and Nets: Cereal Box Blueprint

Cross-Sections and Nets Interactive
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• Video

Cross Sections and Nets Principles

This video gives more detail about the mathematical principles presented in Cross Sections and Nets.
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• Video

Cross Sections and Nets Examples

This video shows how to work step-by-step through one or more of the examples in Cross Sections and Nets.
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• Critical Thinking

Cross-Sections and Nets Discussion Questions

A list of student-submitted discussion questions for Cross-Sections and Nets.
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• Real World Application

Hold the Mail!

Watch as a Priority Mail package is constructed from its net into a box.
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• Real World Application

Origami in Outer Space

Learn about the geometry that links the craft of origami to aerospace engineering.
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• Real World Application

Womb with a View

Learn how cross-sections are used to create 3D and 4D ultrasounds.
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• Real World Application

The Body Factory?

Discover how 3D printing will revolutionize medicine.
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• Study Guide