Links

Chapter 13: 3-D and 2-D Shapes

Geoboards
http://mathforum.org/trscavo/geoboards/
Users will gain access to virtual geoboards to build, measure, and combine many shapes.

Isometric Grids
http://nlvm.usu.edu/en/nav/topic_t_3.html
Users can access a virtual isometric geoboard to explore isometric representations of 3-D objects.

Pattern Block Applet
http://www.arcytech.org/java/patterns/patterns_j.shtml
This links to virtual pattern blocks users can manipulate either in school or at home.

Pentominoes
http://nlvm.usu.edu/en/nav/topic_t_3.html
Users can experiment with virtual pentominoes to see how they can be combined.

Properties of Rectangles and Parallelograms
http://standards.nctm.org/document/eexamples/chap5/5.3/index.htm
This link allows the user to explore rectangles and parallelograms.

Shape Sorter
http://www.shodor.org/interactivate/activities/ShapeSorter/
The user can sort a number of provided on-screen shapes by placing them appropriately in Venn diagrams.

Symmetry
http://www.adrianbruce.com/Symmetry/
http://teachersnetwork.org/dcs/math/symmetry/rot_hubcaps/
http://regentsprep.org/Regents/math/symmetry/Photos.htm
http://www.symmeter.com/symfacer.htm
These links provide users with the opportunity to see visuals of symmetry in everyday life and reveal activities relating to the symmetry of the human face.

Tangram Applet
http://standards.nctm.org/document/eexamples/chap4/4.4/index.htm
This links to virtual tangrams users can combine in different ways.