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University of Texas
Inside Mathematics: Which Shape [Pdf]
This task challenges a student to use knowledge of geometrical attributes to identify and describe shapes.
CK-12 Foundation
Ck 12: Interactive Geometry: 2.1 Transformations in the Plane
Explore the process that changes the shape, size or position of a figure to create a new image, transformations.
PBS
Pbs: Geometry and Classification of 2 D Figures: Bianca Busts a Move
In this video from Cyberchase, Bianca breaks her friend's tabletop when she's practicing dance moves in his living room. She uses measurement and geometry to get a new piece of wood that will fit the table exactly. The accompanying...
University of Texas
Inside Mathematics: Quilt Making [Pdf]
This task challenges a student to demonstrate understanding of the concept of two dimensional shapes and their properties.
National Council of Teachers of Mathematics
Nctm: Illuminations: Geometric Solids
An interactive game to find number of edges, surfaces and vertices of different geometric shapes.
Illustrative Mathematics
Illustrative Mathematics: G Co Seven Circles Ii
In this task, seven pennies are placed in a circle so that they are all touching one in the center and their neighbors. Students are asked to find as many rigid motions of the plane as they can which are symmetries of this configuration...