G-GMD.2.4

Identify the shapes of two-dimensional cross-sections of three-dimensional objects, and identify three-dimensional objects generated by rotations of two-dimensional objects.

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Formative Assessments
Formative Assessments
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Students are asked to identify and draw cross sections of a rectangular prism and to describe their dimensions.
Inside the Box
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Students are given a solid and asked to determine the two-dimensional shape that will create the solid when rotated about the y-axis.
Working Backwards – 2D Rotations
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Students are asked to identify and describe two-dimensional cross sections of three-dimensional solids.
Slice It
Virtual/Hands-on Manipulatives
Virtual/Hands-on Manipulatives
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Using this resource, students can manipulate the measurements of a 3-D hourglass figure (double-napped cone) and its intersecting plane to see how the graph of a conic section changes.
3-D Conic Section Explorer
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This virtual manipulative allows students to manipulate blocks, add or remove blocks, and connect them together to form solids.
Space Blocks
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Assessment Questions
Assessment Questions
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FSA Sample Question
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FSA Sample Question
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Videos of Expert Instruction
Videos of Expert Instruction
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How long will it take the tank to fill up?
Water Tank
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Math Literature
Math Literature
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Tennis Balls in a Can
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Reflective of the modernness of the technology involved, this is a challenging geometric modelling task in which students discover from scratch the geometric principles underlying the software used by GPS systems.
Global Positioning System II
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This question examines the algebraic equations for three different spheres. The intersections of each pair of spheres are then studied, both using the equations and thinking about the geometry of the spheres.
Global Positioning System I