Geometry - 3-D Shapes

TutorGiant

     Three-dimensional objects are objects that take up solid space.  
 
     Whereas two-dimensional shapes (which are flat) have area, three-dimensional (3-D) shapes have volume.  Volume is the measurement of the space that a three-dimensional shape fills up.  Two-dimensional shapes also have perimeters (the area around a shape) or circumferences (the length around a circle), three-dimensional shapes have surface area.  Surface area is the area covered by all the surfaces of a solid shape.  Just think of all the wrapping paper you would use when wrapping a gift.  The wrapping paper covers all the sides of the three-dimensional shape.

     Some examples of 3-D shapes are:

Cylinders           

Cones

Cubes

Triangular Prisms

Pyramids

Rectangular Prisms
 

     Students can learn how to identify and classify 3-D shapes by their edges, vertices, and sides.

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Tutorgiant.com provides 3-D Shape lessons with worksheets.

See some of the lessons in our video library.

SHAPES - Lesson (E) Identifying 3-D Shapes (Grade 3)
SHAPES - Lesson (F) Classifying 3-D Shapes (Grade 3)
SHAPES - Lesson (J) Pyramids and Prisms (Grades 5-6)
AREA - Lesson (G) Surface Area of Rectangular Prisms (Grades 7-8)
AREA - Lesson (H) Surface Area of Cylinders (Grades 7-8)

AREA - Lesson (J) Surface Area of Cubes (Grades 7-8)

VOLUME - Lesson (C) Volume of Rectangular and Triangular Prisms (Grade 6)
VOLUME - Lesson (D) Volume of Cylinders (Grades 7-8)
VOLUME - Lesson (E) Volume of a Pyramid (Grade 9)
VOLUME - Lesson (F) Volume of a Cone (Grade 9)

Learn'Em Good                 

       Math                  

by Stuart Ackerman        

     MSc.Ed.,B.A.