Tarski's World is an innovative and enjoyable way to introduce your
students to the language of first-order logic. Using this program
students quickly master the meaning of the connectives and
quantifiers, and soon become fluent in the symbolic language at the
core of modern logic. Tarski's World allows the students to build
three-dimensional worlds and to describe them in first-order
logic. They evaluate the sentences in the constructed worlds and if
their evaluation is incorrect, the program provides them with a game
that leads them to understand where they went wrong.
World is available in two ways, either alone (called Tarski's World
4.0 or Tarski "Lite") or as part of the logic textbook/software
package called The Language of First-order Logic.
"Lite", the stand-alone package, is intended as a supplement to any
standard logic text or for use by anyone who wants to learn the
language. The disk and manual contain over a hundred exercises from
very basic to highly sophisticated.
Tarski "Lite" is available
for Macintosh or Microsoft Windows. A version of the software for
computers running NeXTstep is also available. To receive it,
purchase a copy of either the Macintosh or Windows version and
follow the instructions contained in the book.
Jon Barwise and
John Etchemendy have developed several other logic courseware
packages. Information on these packages can be be found at http://tw.stanford.edu/