Saturday, March 8, 2008

Geometric Solids -- Nets


In geometry, the "pattern" or "template" that will create a solid figure is called a "net." We've been studying geometric solids, and specifically, rectangular prisms, using product boxes to create "nets." Here, students are measuring their boxes to determine the dimensions -- height, length, and width. They then cut the boxes apart to create the flat net, and then used their measurements to create scaled drawings of their nets.

As part of this unit of study, students calculate the volume and surface area of their boxes, and consider how these two values are related.

They also make nets of cubes, and explore ways that a net can be drawn to create the solid figure, and ways that will not make the solid. Working in this very concrete way, builds understanding of the relationships between all the geometric formulas that are connected to the area and volume of solids.

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