TEK1.6 Geometry and measurement. The student applies mathematical process standards to analyze attributes of two-dimensional shapes and three-dimensional solids to develop generalizations about their properties.

The student is expected to:

(A) classify and sort regular and irregular two-dimensional shapes based on attributes using informal geometric language;

(B) distinguish between attributes that define a two-dimensional or three-dimensional figure [such as a closed figure with three sides is a triangle or a solid with exactly six rectangular faces is a rectangular prism] and attributes that do not define the shape [such as orientation or color] ;

(C) create two-dimensional figures, including circles, triangles, rectangles, and squares, as special rectangles, rhombuses, and hexagons;

(D) identify two-dimensional shapes, including circles, triangles, rectangles, and squares, as special rectangles, rhombuses, and hexagons and describe their attributes using formal geometric language [such as vertex and side] ;

(E) identify three-dimensional solids, including spheres, cones, cylinders, rectangular prisms (including cubes), and triangular prisms, and describe their attributes using formal geometric language [such as vertex, edge, and face] ;

(F) compose two-dimensional shapes by joining two, three, or four figures to produce a target shape in more than one way if possible;

(G) partition two-dimensional figures [such as circles and rectangles] into two and four fair shares or equal parts and describe the parts using words [such as "halves," "half of," "fourths," or "quarters"] ; and

(H) identify examples and non-examples of halves and fourths.

 

 

geometry.jpg

2-D Vocabulary:  Plane shapes, sort, side, vertex, triangle, circle, rectangle, square (special rectangle), rhombus, hexagon

 3-D Vocabulary:  Solid figure, edge, vertex, face, sphere, cylinder, cone, flat surface, triangular prism, rectangular prism, cube (special rectangular prism)


 

Geometry

2-D Guiding Questions:

Can Ss. describe and identify a two-dimensional figure informally?

Can Ss. identify and describe 2-D figures in the real world?

Do Ss. use informal and formal geometric vocabulary appropriately?

Do Ss. label pictures of two-dimensional figures accurately?


3-D Guiding Questions:

How are many everyday objects close approcimations of solid (3-D) figures?

How can identifying attributes be used to sort solid (3-D) figures?

How does writing down all the ways of doing something help to solve a problem?





Student Activity Sheets                                            

geometry.congruent.JPG

congruent.shapes.doc

 Geometry.roll.shape.JPG

congruent.shapes.docgeometry.2D.roll.shape.doc

 geometry.fill.hex.JPG

geometry.fill.hexagon.doc

geometry.Look.at.3D.JPG

Geometry.Look. 3D.shapes.doc

geometry.3D.roll.shape.JPGgeometry.3D.roll.shape.doc