Virtual Tiles is a software program which gives students of all ages a
concrete model for operations with integers and polynomials. It is a
computerized version of the algebra tiles manipulative used by many
teachers. The evaluation of an expression, combining like terms,
solving equations, the distributive property, multiplication of
polynomials, division of polynomials, and factoring, all have concrete
models using tiles which are extremely effective. Virtual Tiles allows
a student to construct her/his own meaning for many complicated
concepts. Students can then factor expressions with Virtual Tiles that
very few students in high school could do using any other technique.
This software provides all the benefits of working with algebra tiles
or blocks with many significant advantages. (From the product manual)

NECTAR Foundation released this Macintosh application for free from
their website and states this as unsupported.

Compatibility
Architecture: 68k PPC

The ReadMe file states that it is compatible with Mac OS 8.6 or later.
Virtual Tiles also will run in Classic mode under Mac OS X. In Classic
mode, the screen resolution must be no greater than 800 x 600.