Geometry Standard for Grades 3–5

Spatial Sense

Analyze characteristics and properties of two- and three-dimensional geometric shapes and develop mathematical arguments about geometric relationships
• identify, compare, and analyze attributes of two- and three-dimensional shapes and develop vocabulary to describe the attributes;
• classify two- and three-dimensional shapes according to their properties and develop definitions of classes of shapes such as triangles and pyramids;

Use visualization, spatial reasoning, and geometric modeling to solve problems
• build and draw geometric objects;

Visit these Websites and complete the activities.

	E-Lab Patterns for Solid Figures Select the squares that fold into cubes.
	TopMarks Interactive module to learn the properties of shapes..
	Illuminations Create triangles using the online geoboard.
	Math Learning Center Create polygons using the online geoboard.